Why is this happening to me? I'm playing 4.2

Try to reinstall it. Maybe there is a file that gone

I've tried and it's still not working

There's a bug in which certain chips from Intel won't allow it to work. This bug has been fixed in the latest beta release of Toribash, which you can get right here--->https://content.toribash.com/Toribash...eta5-Setup.exe. If you don't want to download the new one, there's one other solution. If you don't mind the game looking super crappy, right-click the Toribash Icon(Computer-The drive it's installed in-Toribash folder-Toribash Icon.), goto Properties-Compatablity- and check run in 256 color mode. This apparently fixes the problem and lets you play online. However the game looks like crap. I don't know if it works since I never had any problems.

Try deleting it then downloading 4.3 it might fix the problem your having.