How do I get SLAMs from HL2DM working correctly on dedicated GMOD server?

[WW3D]

Hey all,

My server mounts the HL2MP content. But the SLAMs really don't work right at all. For example, most of the sounds are missing, and when you place a SLAM with primary fire, it often ALSO throws out 1 or 2 secondary fire slams. It's quite odd.

I'm assuming there is something extra I need to do to get them working correctly. However, I have already extracted all the content from the HL2DM pak files to the server. So I don't understand why they are so glitched when in GMOD server.

Anyone already been through this and know how to get the SLAMs performing as they do in HL2DM?