Adv. Dupe. doesn't want to save

[Rhyok]

Ok, so here's the deal:
I built something using Wire and PHX Mod (a hovercraft) and I went to save it. Right clicked my contraption, everything looked fine on the ghost. Pressed C, Save button, type in a filename (hovercraft.txt) and a short description and clicked save. Nothing happened at all, nothing. I went back and looked at my directories, also nothing.

What's going on here?

BTW: I just updated to the latest SVN from the server. Will try again.
UPDATE: Still nothing. Am I saving it incorrectly?

[BoomKin]

did you install the original advanced dup files before the SVN

[Rhyok]

What? You mean the files on garrysmod.org?
When I do that, the SVN updater won't update.
I'm gonna try completely emptying my addons folder and doing an SVN.

UPDATE: Ok, that worked... now to put all my mods back in and see if I can save.
UPDATER: ... ok... tonight's going to be a long night. One of my mods is causing the unability to save, so I'll just have to go through, one by one, until I find it.
UPDATEST: ALRIGHT!! Works now. In case the dev. team was interested, the mod was "RT's Anti Noclip STOOLs", Version 1.0, made 30th December 2006.
That sucks, now I lost antinoclip capabilities, but saving is worth far more than that.