It appears that the Direwolf20 pack for 1.7 doesn't always download any mods, and just starts up as vanilla Minecraft.
The launcher gives this error when downloading:
Spoiler
FTB Launcher logs:
[22:09:43] [DEBUG] Main.main:142: Launcher arguments: []
[22:09:43] [DEBUG] Main.main:153: FTB Launcher CI Build #: 272, Git SHA: 8948d8dcd213
[22:09:43] [INFO] JGoogleAnalyticsTracker$2.run:484: AnalyticsBackgroundThread started
[22:09:43] [INFO] MainHelpers.printInfo:33: FTBLaunch starting up (version 1.4.4 Build: 10404)
[22:09:43] [DEBUG] MainHelpers.printInfo:34: System's default JVM: (This is not always used to launch MC)
[22:09:43] [DEBUG] MainHelpers.printInfo:35: Java version: 1.7.0_67
[22:09:43] [DEBUG] MainHelpers.printInfo:36: Java vendor: Oracle Corporation
[22:09:43] [DEBUG] MainHelpers.printInfo:37: Java home: C:\Program Files\Java\jre7
[22:09:43] [DEBUG] MainHelpers.printInfo:38: Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation
[22:09:43] [DEBUG] MainHelpers.printInfo:40: Java vm: Java HotSpot 64-Bit Server VM version: 24.65-b04 by Oracle Corporation
[22:09:43] [INFO] MainHelpers.printInfo:41: OS: Windows 7 6.1 (64-bit)
[22:09:43] [INFO] MainHelpers.printInfo:42: Launcher Install Dir: C:\FTB
[22:09:43] [INFO] MainHelpers.printInfo:43: System memory: 1367M free, 3281M total
[22:09:44] [INFO] JavaFinder.parseJavaVersion:175: The FTB Launcher has found the following Java versions installed:
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_71 sorted as: 1.7.0_71 32 Bit Java at : C:\Program Files (x86)\Java\jre7\bin\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_67 sorted as: 1.7.0_67 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_51 sorted as: 1.7.0_51 64 Bit Java at : C:\Program Files\Java\jdk1.7.0_51\bin\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_67 sorted as: 1.7.0_67 64 Bit Java at : C:\Windows\system32\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_71 sorted as: 1.7.0_71 32 Bit Java at : C:\Windows\SysWOW64\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:177: Java Version: 1.7.0_67 sorted as: 1.7.0_67 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[22:09:44] [INFO] JavaFinder.parseJavaVersion:207: Preferred: Java Version: 1.7.0_67 sorted as: 1.7.0_67 64 Bit Java at : C:\Program Files\Java\jre7\bin\java.exe
[22:09:44] [INFO] DownloadUtils.run:431: DownloadUtils.run() starting
[22:09:44] [INFO] I18N.addFiles:97: [i18n] Fallback enUS loaded
[22:09:44] [INFO] I18N.setLocale:120: [i18n] enUS English (US) language file loaded!
[22:09:44] [INFO] LoadingDialog.advance:48: Checking installation location
[22:09:44] [INFO] LoadingDialog.advance:48: Loading user data
[22:09:44] [INFO] User.readObject:154: Password is now encrypted with new key
[22:09:44] [INFO] User.readObject:155: Converted password will be saved to disk after successful login
[22:09:45] [DEBUG] OSUtils.getMacAddress:353: Interface: Realtek PCIe GBE Family Controller : eth3
[22:09:45] [DEBUG] DownloadUtils.run:451: Balance Settings: 0.75 > 0.9567717580836158
[22:09:45] [INFO] DownloadUtils.run:455: Balance has selected Automatic:CreeperRepo
[22:09:45] [DEBUG] Benchmark.logBenchAs:73: Download Utils Bal took 577 ms.
[22:09:45] [DEBUG] Benchmark.logBenchAs:73: Download Utils CH took 824 ms.
[22:09:45] [DEBUG] Benchmark.logBenchAs:73: Download Utils Curse took 956 ms.
[22:09:45] [INFO] DownloadUtils.run:507: DL ready
[22:09:45] [INFO] DownloadUtils.run:540: Using download server Automatic:Atlanta on host atlanta1.creeperrepo.net (192.111.138.82)
[22:09:45] [DEBUG] Benchmark.logBenchAs:73: Download Utils Init took 959 ms.
[22:09:46] [DEBUG] CipherCore.doFinal:811->CryptoUtils.decrypt:88: foo: javax.crypto.BadPaddingException: Given final block not properly padded
com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:811)
com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:676)
com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:313)
javax.crypto.Cipher.doFinal(Cipher.java:2087)
net.ftb.util.CryptoUtils.decrypt(CryptoUtils.java:83)
net.ftb.data.User.readObject(User.java:156)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
java.io.ObjectInputStream.readSerialData(Unknown Source)
java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
java.io.ObjectInputStream.readObject0(Unknown Source)
java.io.ObjectInputStream.readObject(Unknown Source)
net.ftb.data.UserManager.read(UserManager.java:98)
net.ftb.data.UserManager.<init>(UserManager.java:46)
net.ftb.main.Main.mainGUI(Main.java:288)
net.ftb.main.Main.main(Main.java:184)
[22:09:46] [INFO] LoadingDialog.advance:48: Creating Console window
[22:09:46] [INFO] LoadingDialog.advance:48: Creating main window
[22:09:46] [DEBUG] AuthlibDLWorker.doInBackground:58: Loading Authlib...
[22:09:47] [DEBUG] AuthlibDLWorker.downloadJars:148: Connecting.. Try 1 of 5 for: https://libraries.mi...hlib-1.5.17.jar
[22:09:47] [INFO] AuthlibDLWorker.doInBackground:70: Adding Authlib to Classpath
[22:09:47] [DEBUG] Benchmark.logBenchAs:73: Authlib DL Worker Init took 1120 ms.
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 0 enUS to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 1 cyGB to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 2 daDK to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 3 deDE to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 4 enUS to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 5 enGB to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 6 esES to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 7 fiFI to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 8 frFR to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 9 itIT to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 10 nlNL to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 11 noNO to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 12 maHU to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 13 ptBR to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 14 ptPT to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 15 ruRU to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 17 zhCN to options pane
[22:09:48] [INFO] OptionsPane.<init>:153: [i18n] Added 16 svSE to options pane
[22:09:48] [INFO] I18N.setLocale:120: [i18n] enUS English (US) language file loaded!
[22:09:48] [DEBUG] Benchmark.logBenchAs:73: UnreadNews Init took 3 ms.
[22:09:48] [INFO] LoadingDialog.advance:48: Setting up Launcher
[22:09:48] [DEBUG] UpdateChecker.<init>:72: Launcher Install path: C:\Users\Alex\Downloads\FTB_Launcher.exe
[22:09:48] [INFO] LoadingDialog.advance:48: Downloading pack data
[22:09:49] [INFO] ModpackLoader.run:72: Loading modpack information for modpacks.xml...
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 1 (Direwolf20)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 2 (Monster)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 3 (Direwolf20)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 4 (Alpha FTBLite 3)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 5 (Alpha FTB Mage Quest)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 6 (Horizons)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 7 (Tech World 2)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 8 (Magic World 2)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 9 (FTBLite2)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 10 (FTB Unleashed)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 11 (FTB Ultimate)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 12 (Unstable 1.7.x (Public Beta Test Pack))
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 13 (FTB Lite)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 14 (Direwolf20 1.5 v2)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 15 (Direwolf20 Pack)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 16 (MindCrack Pack)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 17 (YogCraft Modpack)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 18 (FTB Unhinged)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 19 (Magic World)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 20 (Tech World)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 21 (Pax Prime 2014 Map)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 22 (Pax East 2014 Map)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 23 (Pax Challenge Pack 2013)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 24 (Feed The Beast Retro SSP)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 25 (Feed The Beast Retro SMP)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 26 (Slow's Stream Pack)
[22:09:49] [INFO] AbstractModPackPane$3.run:155: Adding FTB Pack: 27 (Feed The Beast Beta Pack A)
[22:09:49] [DEBUG] UpdateChecker.shouldUpdate:133: updater: buildjenk 272 < betajenk 273|| version 10404 < 10405
[22:09:49] [DEBUG] UpdateChecker.shouldUpdate:134: latest = 10404
[22:09:49] [INFO] ModpackLoader.run:72: Loading modpack information for thirdparty.xml...
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 1 (Crash Landing)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 2 (Agrarian Skies: Hardcore Quest)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 3 (Material Energy^3)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 4 (Test Pack Please Ignore)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 5 (Running Red)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 6 (EPiCCRAFT)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 7 (BloodNBones)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 8 (Magic Farm 2:Adventures in Technology)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 9 (Vanilla Minecraft)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 10 (Lapito's Galacticraft Modpack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 11 (Infamy - Dynamic Warfare)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 12 (Voxel)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 13 (New World Mod Pack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 14 (RPG Immersion Pack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 15 (BronyModPack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 16 (Ampz Modpack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 17 (VoxelModPack)
[22:09:50] [INFO] AbstractModPackPane$3.run:155: Adding Third Party Pack: 18 (Magic Farm)
[22:09:51] [INFO] ModpackLoader.run:72: Loading modpack information for boom.xml...
[22:09:51] [INFO] ModpackLoader.run:72: Loading modpack information for ME3.xml...
[22:09:52] [INFO] ModpackLoader.run:72: Loading modpack information for blood.xml...
[22:09:52] [DEBUG] ModpackLoader.run:143: All packlists loaded
[22:09:52] [DEBUG] Benchmark.logBenchAs:73: Modpack Loader Init took 3286 ms.
[22:09:52] [DEBUG] Benchmark.logBenchAs:73: Launcher Startup(Modpacks loaded) took 8638 ms.
[22:09:52] [INFO] MapLoader.run:44: loading map information...
[22:09:52] [INFO] LoadingDialog.advance:48: Opening main window
[22:09:52] [INFO] TexturePackLoader.run:44: loading texture pack information...
[22:09:52] [DEBUG] Benchmark.logBenchAs:73: MapLoader run took 494 ms.
[22:09:52] [DEBUG] Benchmark.logBenchAs:73: Launcher Startup(maps and texturepacks loaded) took 9135 ms.
[22:09:52] [DEBUG] Benchmark.logBenchAs:73: Launcher Startup(main window opened and ready to use) took 9220 ms.
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 1 (Agrarian Skies Default Map)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 2 (Agrarian Skies Flat Map)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 3 (Agrarian Skies Server Map)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 4 (Direwolf20 Map Ep.0)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 5 (FTB Pax Challenge)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 6 (Direwolf20 Map Ep.0)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 7 (Direwolf20 Map Ep.10)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 8 (Direwolf20 Map Ep.20)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 9 (Direwolf20 Map Ep.30)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 10 (Direwolf20 Map Ep.40)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 11 (Direwolf20 Map Ep.50)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 12 (Direwolf20 Map Ep.80)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 13 (FTB Normal)
[22:09:52] [INFO] MapUtils$6.run:265: Adding map 14 (FTB Insanity)
[22:09:54] [INFO] TexturepackPane$6.run:255: Adding texture pack 1 (Soartex Fanver)
[22:09:54] [DEBUG] Benchmark.logBenchAs:73: Texture Pack Load took 2647 ms.
[22:09:54] [INFO] TexturepackPane$6.run:255: Adding texture pack 2 (Jadedcat Mixpack)
[22:09:54] [INFO] TexturepackPane$6.run:255: Adding texture pack 3 (Invictus)
[22:09:54] [INFO] TexturepackPane$6.run:255: Adding texture pack 4 (Faithful)
[22:09:55] [INFO] TexturepackPane$6.run:255: Adding texture pack 5 (JohnSmith Technicians Remix)
[22:09:55] [INFO] TexturepackPane$6.run:255: Adding texture pack 6 (Familiar yet Different)
[22:09:55] [INFO] TexturepackPane$6.run:255: Adding texture pack 7 (Love And Tolerance)
[22:10:06] [INFO] LaunchFrame.doLogin:437: Logging in...
[22:10:06] [DEBUG] AuthlibHelper.authenticateWithAuthlib:63: Email address given
[22:10:06] [INFO] AuthlibHelper.authenticateWithAuthlib:64: Beginning authlib authentication attempt
[22:10:06] [INFO] AuthlibHelper.authenticateWithAuthlib:65: successfully created YggdrasilAuthenticationService
[22:10:06] [DEBUG] AuthlibHelper.authenticateWithAuthlib:80: mojangData is null or empty
[22:10:07] [DEBUG] AuthlibHelper.authenticateWithAuthlib:133: Authentication is valid
[22:10:07] [DEBUG] AuthlibHelper.authenticateWithAuthlib:136: loggedIn() && CanPlayOnline()
[22:10:07] [DEBUG] AuthlibHelper.authenticateWithAuthlib:140: Authentication done, returning LoginResponse
[22:10:07] [DEBUG] Benchmark.logBenchAs:73: Login Worker Run took 470 ms.
[22:10:07] [DEBUG] LaunchFrame$14.done:479: responseStr: good
[22:10:07] [INFO] LaunchFrame$14.done:482: Login complete.
[22:10:07] [DEBUG] User.writeObject:185: starting...
[22:10:07] [DEBUG] User.writeObject:187: Clearing mojangData
[22:10:07] [DEBUG] LaunchFrame$14.done:486: user data saved
[22:10:07] [DEBUG] LaunchFrame.runGameUpdater:530: ForceUpdate: false
[22:10:07] [DEBUG] LaunchFrame.runGameUpdater:531: installPath: C:\FTB
[22:10:07] [DEBUG] LaunchFrame.runGameUpdater:532: pack dir: direwolf20_17
[22:10:07] [DEBUG] LaunchFrame.runGameUpdater:533: pack check path: direwolf20_17\version
[22:10:07] [DEBUG] LaunchFrame.initializeMods:690: pack dir...
[22:10:07] [INFO] LaunchFrame.initializeMods:691: direwolf20_17
[22:10:07] [INFO] ModManager.upToDate:363: Modpack is out of date.
[22:10:07] [INFO] ModManager$ModManagerWorker.downloadModPack:196: Downloading Mod Pack
[22:10:07] [DEBUG] ModManager$ModManagerWorker.downloadModPack:205: pack dir: direwolf20_17
[22:10:07] [DEBUG] ModManager$ModManagerWorker.downloadModPack:206: dynamicLoc: C:\Users\Alex\AppData\Local/ftblauncher/
[22:10:07] [DEBUG] ModManager$ModManagerWorker.downloadModPack:207: installPath: C:\FTB
[22:10:07] [DEBUG] ModManager$ModManagerWorker.downloadModPack:208: baseLink: modpacks/direwolf20_17/1_0_0/
[22:18:50] [INFO] DownloadUtils.backupIsValid:324: Issue with new md5 method, attempting to use backup method.
[22:18:51] [INFO] DownloadUtils.backupIsValid:364: Local: B2540A0E5067FEF107398C7EEE8DAED6
[22:18:51] [INFO] MCInstaller.installMods:483: dirs mk'd
[22:18:51] [DEBUG] MCInstaller.installMods:490: install path: C:\FTB
[22:18:51] [DEBUG] MCInstaller.installMods:491: temp path: C:\Users\Alex\AppData\Local/ftblauncher/
[22:18:51] [DEBUG] MCInstaller.installMods:492: source: C:\Users\Alex\AppData\Local\ftblauncher\ModPacks\direwolf20_17\minecraft
[22:18:51] [DEBUG] MCInstaller.installMods:493: packDir: direwolf20_17
[22:18:51] [DEBUG] ModManager.cleanUp:403: retaining modpack file: C:\Users\Alex\AppData\Local\ftblauncher\ModPacks\direwolf20_17\direwolf20_17.zip
[22:18:51] [INFO] MCInstaller.gatherAssets:127: Checking local assets file, for MC version1.7.10 Please wait!
[22:18:51] [DEBUG] MCInstaller.gatherAssets:132: Checking pack libraries
[22:18:51] [ERROR] MCInstaller.gatherAssets:173: pack.json file not found-Forge/Liteloader will not be able to load!
[22:18:51] [DEBUG] MCInstaller.gatherAssets:184: Checking minecraft version json
[22:18:51] [DEBUG] MCInstaller.gatherAssets:199: checking minecraft libraries
[22:18:51] [DEBUG] MCInstaller.gatherAssets:267: Checking minecraft assets
[22:18:52] [DEBUG] MCInstaller.gatherAssets:281: Starting TaskHandler to check MC assets
[22:18:53] [DEBUG] Benchmark.logBenchAs:73: parallel asset check took 550 ms.
[22:18:53] [INFO] MCInstaller.launchMinecraft:328: Setting up native libraries for Direwolf20 v Recommended Version MC 1.7.10
[22:18:53] [DEBUG] MCInstaller.launchMinecraft:355: packbaseJSON 1.7.10
[22:18:54] [INFO] MCLauncher.syncAssets:271: Syncing Assets:
[22:18:54] [INFO] MCLauncher.launchMinecraft:76: Java Path: C:\Program Files\Java\jre7\bin\javaw.exe
[22:18:54] [INFO] MCLauncher.launchMinecraft:77: Pack: Direwolf20 1.7.10
[22:18:54] [INFO] MCLauncher.setMemory:254: Setting MinMemory to 256
[22:18:54] [INFO] MCLauncher.setMemory:256: Setting MaxMemory to 3281
[22:18:54] [INFO] MCLauncher.launchMinecraft:99: Defaulting PermSize to 256m
[22:18:54] [INFO] MCLauncher.launchMinecraft:137: Adding Optimization Arguments
[22:18:55] [DEBUG] Benchmark.logBenchAs:73: UnreadNews Init took 62 ms.
[22:18:56] [main/INFO]: Setting user: Aezex
[22:18:56] [Client thread/INFO]: LWJGL Version: 2.9.1
[22:18:59] [Client thread/INFO]: Reloading ResourceManager: Default
Starting up SoundSystem...
Initializing LWJGL OpenAL
(The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
OpenAL initialized.
[22:19:00] [Sound Library Loader/INFO]: Sound engine started
[22:19:01] [Client thread/INFO]: Created: 512x256 textures/blocks-atlas
[22:19:01] [Client thread/INFO]: Created: 256x256 textures/items-atlas
[22:19:04] [Client thread/INFO]: Stopping!
SoundSystem shutting down...
Author: Paul Lamb, www.paulscode.com
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 0 enUS to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 1 cyGB to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 2 daDK to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 3 deDE to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 4 enUS to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 5 enGB to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 6 esES to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 7 fiFI to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 8 frFR to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 9 itIT to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 10 nlNL to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 11 noNO to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 12 maHU to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 13 ptBR to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 14 ptPT to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 15 ruRU to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 17 zhCN to options pane
[22:19:04] [INFO] OptionsPane.<init>:153: [i18n] Added 16 svSE to options pane
[22:19:04] [INFO] I18N.setLocale:120: [i18n] enUS English (US) language file loaded!
[22:19:39] Logs copied to clipboard
There a couple different fixes people have been suggesting so far: Force update the Launcher, or redownload the launcher. Neither worked for me.(Although I might have done something wrong.)
Can somebody figure out what is wrong, and how to fix it?
EDIT: I don't code, but the log seems to say that a certain pack.json file is missing, therefore Forge can't load.