Why are my buttons freezing!

Ok, so I’ve built this template and I’ve already made about 9 of them. All of the others work fine, but for some reason, when I created the latest one, the exact same way as I’ve created the others, the buttons are acting funky. I click buttons 1-11 and they work fine, I get to 12 and it doesn’t respond. I then click back on one before 12, they come back, and then I cannot get past 12. What the hell. I can’t figure it out considering the script is exactly the same as the others and the previous one’s work fine. I can’t upload my .swf because it is too large. Any ideas?