After installing a mod, I opened Cortex normally and it looks like a normal window except that it's all black, and it can't be exited from normally. (have to use ctrl+alt+delete)
I already tried reinstalling in several different locations, and I removed all my mods from the cortex command folder. Any ideas on what to do? Keep in mind I'm a bit of a noob at cortex and computers in general.

Problem solved!