Every time I install PAC or join a server that has PAC mounted on it, my gmod crashes to desktop without an error given, I need help to fix it, can anyone help me?

EDIT: Here's a crashlog

Initializing Awesomium..
Parent cvar in server.dll not allowed (p2p_enabled)
No Kinect SDK
Addons have changes - remounting
Restoring gamemode to sandbox
Restoring gamemode to sandbox
PREP OK
Particles: Missing 'particles/eye_greenplasma .pcf'
Reading externally referenced elements is not supported!

EDIT 2: I figured out the solution, there was a conflicting file in my HL2 directory, I deleted my HL1, HL2, HL2DM, and HL2 update files and it now works.