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Uninstall the texture pack and see if the crashing persists. From there, we will be able to pinpoint what's crashing you (in case it doesn't happen to be the texture pack) and possible solution/s for it later
Only reason why I have not yet tried it is due to the fact that I didn't save the original textures for the game, and if there is a download for the original map textures that came with the update then I have no idea were they could possibly be... Though, thank you. I may try redownloading it soon while I still have the time.