the problem is fixed admin please close this thread thanks
I have the same problem, it affects TF2 and CS:S too.
Upload your dumps to http://dumps.garrysmod.com then email the results (links) to Garry.
whats his mail? please PM me so not everybody can read (and abuse) it
pretty sure its like garry.newman (at) gmail.com
I just found the solution; I validated my game files and it actually worked!
Please take anything you need HELP/SUPPORT with to the HELP/SUPPORT section.