Board Thread:LotR Mod Technical Support/@comment-30025815-20160921024006/@comment-27219153-20160921185100

Samwise is correct about the 1GB allocated and you should allocate more, but its not the cause of this crash. It looks similar to crashes that happen as a result of an 'incorrect' render distance. (In 1.8 render maximum render distance was increased from 16 to 32 and joining a 1.7.10 world with a render distance above 16 can cause a crash.) Before you join a server or singleplayer world, try reducing your render distance and possibly other video settings. If that doesn't work, then delete your options.txt file in your .minecraft folder. However, if you are using technic then its probably a different problem causing your crash and doing these things may help but probably not.