The mod "Open Blocks", item "Trophy" has cause a crash for my ssp.
Using the mob grinder there have been getting trophy drops as you would expect but upon activating the enderman trophy it sent me someone on the map which cause an "Illegal Stance" crash and now can no longer load up the map.
Any help would be great also a warning, do not activate the enderman trophy.
Tululaboo.
Solved : Use a world edit to move both you and "player" to new area (player i believe is what marks where you are teleported to)