Help with propper

Now I’ve been trying to get propper working and haven’t gotten to work sadly.
I’ve been following the directions from Top Hat Waffle
Anyway I seem to be getting an error whenever I try to make a new VMF or even open an older one. This is the error

http://puu.sh/9sSIn/d290e50c13.png[/T]
And this is what it looks like in hammer
[T]http://puu.sh/9sSJ0/0816852e85.png[/T]
These are my settings.
[T]http://puu.sh/9sSVm/37e95bbe9e.png

Any help would be appreciated. Thanks.