Trying to join my server, and Garry's Mod keeps crashing.

So, every time I go to join my server, Garry’s Mod crashes. Yet, when I join a different server, it works fine. I had a few people go on to the server, they said they got on fine. Why can I not join?
Things I’ve tried:
Reinstalling Garry’s Mod
Restarting my computer
Restarting Steam
Restarting the server
Messed around in single player for a little bit
Defragment

If someone could help me, that would be great.
Thanks