Garry's Mod not starting fully up. Please help ASAP!

ok so i am on a mac and I tried to start my gmod up and I noticed it was loading for an extremely long time, much like the Mavericks problem that happened before however i fixed that. ever since it updated today it gives me this message on my desktop that says “LOAD FROM FILE FAILED resource/ModEvents.res”. can someone please tell me how to fix this file, should i just delete all the files for gmod and then redownload it? again im on mac osx mavericks and it was running fine before then when i exited out of it i noticed steam was updating it and then when i tried to later relaunch it, it would fully start up. please help as soon as possible!

[editline]22nd January 2014[/editline]

i tried deleting all the app support and files then reinstalling it biut the same problem happened.