I’m aware that Garry’s Mod is currently broken - I’m looking into it right now. This isn’t something you can fix yourself - so sit tight and I’ll have a patch ready as soon as possible!
Update:
Just merging the code now. I don’t envisage any huge problems with this process - so it should be smooth sailing.
You can follow me on twitter if you want to follow the status more closely.
Update:
All fixed!
Update:
I’m aware of the problems with the current patch (tf2 map crashes, file.* function changes). I’m aiming to fix those in a patch - but it’s likely to be released on Monday.