Charmizard123

Soz I meant 3.1.2 to 3.1.3

Can someone help me please! I cant update tekkit classic 1.3.2 to 1.3.3 for some reason. Because when I try to update it through the launcher to the latest version it asks me if I want to update this pack so I say yes and it updates. But when its finished I try to load it and it just says that minecraft has crashed and the only way I can play it again is if I set it to 1.3.2. this is really bugging me so if someone knows why this Is happening can you please tell me why and how I can fix it? Thanks!