Most models in the propeller model pack are errors

I installed the propeller model pack using the svn. I installed it in the addons folder, and garrysmod detects that the models are there. It’s just that almost all the models are errors. I’d really like to use the exhaust pipes from that model pack… What have gone wrong?

Note:
I’ve tried both the garrysmod.org download and the svn.
when I try to spawn the error models, nothing spawns.

[editline]25th December 2011[/editline]

I didn’t want to bump the propeller model pack thread.

Make sure the addon has a info file, otherwise make/copy one or drop the contents into the garrysmod dir.
I would like to add, 4G is the shit, from the person typing this with a phone.