Upon opening tekkit classic my computer freezes

[fartbob56]

Title: Upon opening tekkit classic my computer freezes

Version: 3.1.3

OS: Mac OS X 10.5.8

Java Version: Unsure

Description of Problem:

I wasn't having a problem until I got the new Launcher because the old one said I couldn't connect to minecraft. So when I got the new one I opened it up and it seemed funny cause the window and the minecraft image inside the window saying "Mojan" weren't in alinement then everything froze and all I had control over was the mouse that didn't do anything.

Error Messages:

N/A

Error Log:

[rcmaehl]

Try using Tekkit Classic 3.1.2 instead of 3.1.3. As 3.1.3 is naturally buggy.