Mahalis Portal Gun SWEP errors

Here’s what’s up. Whenever I shoot the Portal Gun onto a surface, the particle effects show up, but not the portal. My screen is flooded with error messages, but I can still enter and exit portals. Also, this worked on my computer with XP, but not my Windows 7 computer. Could that have something to do with it? Any input is appreciated.

MARLWOLF78

http://img269.imageshack.us/img269/9789/rpc18v10000m.jpg

Portal Gun SWEP v.0.97

Probably because it’s about a year and a half out of date and an abandonded project.

That aside, it still used to work, and I’d like it if a there was a solution.

Yeah, it worked a year and a half ago, since then it stopped working and thus the project abandoned.

Oh. Well, thanks for your time anyway. I hear the Garry’s Mod updates can sometimes break SWEPs.