Help Me Please Attack of the B-Team Problems

[boomboxrox]

So I'm having issues with my Technic Launcher. When I try to play Attack of the B-Team, it loads like it's going to start the game then the launcher disappears. After a couple seconds of nothing happening, the launcher re-loads like nothing happened. There's no B-Team game up. I know a lot of other people are having problems like this with their custom mod packs. This happens to all of my modpacks. I deleted and redownloaded .technic and the launcher but that doesn't seem to help. Also restarted my computer a couple times as well. Does someone know what's going on?

[mrkirby173]

Open your console by clicking the cog icon in the top right hand corner and then click "Show Console". Then load up your modpack and post any error that comes up here.