I didn't create this guide. I took it from the minecraft forums to help anyone have problems with the game.
There is a much shorter way and you guys won't believe it... just Force Update trust me it always worked for me
Force update will only change the the items and folders in the bin fileWhat this means is that if you happen to have a mod that runs from your "mods" folder and you force update you will still crash if the mod required modloader, modloadermp, etc.Why? It's because the mods folder and the mods within it were not deleted by the force update, though modloader, modloadermp were because they were in the minecraft.jar, which as I said before was reset, removing the modloader, modloadermp, etc. classes, which causes you to crash on even a clean, freshly updated Minecraft game
An alternative to this is as follows: Windows 7-Xms[RAM]M minimum | -Xmx[RAM]M maximum1GB 10242GB 20483GB 30724GB 40965GB 51206GB 61447GB 71688GB 8192Start-> Control Panel -> All Control Panel Items -> Java -> Java -> View ->Runtime parameters: -Xms512M -Xmx1024MThat way one doesn't have to create a .bat file.Source: https://www.youtube.com/watch?v=8GwedxiId1A&feature=player_detailpage#t=165s
It isn't usefull dot me jet, but I'm almost sure it will be usefull in the future, thenk you for posting this
eehh, oops.. I wasn't such active in 2012 so I didn't see it I think... annyways, it is great to have such a tread on forums
I feel like most of this is outdated. What does someone with more knowledge of current causes of Minecraft crashes think?