Thanks for replying! I have Counter Strike Source however I got it through other means.. (There is ways to get it free - Not sure if it actually matters or not.) However. I do wonder if I maybe accidentally deleted the file? Since downloading CSS I have wiped my gmod and re-installed.. (Maybe it took out that file I added long ago?) Gonna re-download it and see!
If that fails I'll try the other things you mentioned deleting said folders.
I'll also check through my files and make sure I have nothing additional downloaded!
Thank you again for the help! I will check the CSS make sure I still have that file and then try the other thing if needed. Worst case scenario I may have to try and get CSS legit lol.