noobphoria

I have another problem similiar to this but not just attack of the b team, because i was sort of sad not being able to play attack of teh b team, I decided to go back to the old days and play yog box when I tried to play other modpacks to, this came up in the same "load" bar as above "verifying asm-all-4.1.jar" please helpppp

I was playing atttack of the b team as usual, and then it was getting a litlle bit laggy so I logged off. Now, when I tried to get back on, it wouldn't load. What I mean by this is... I click on the launcher The Launcher opens I scroll to "Attack of the B team" I click "play" (I usually have it on automatically select recommended build) it starts to load and I can see the stuff its loading ex: verifying blah blah.. but then, it stops on "verifying jopt-simple-4.5.jar" and i can never get past this please help aghhhhhhh