When i try opening up a project from source control in VS2005 RTM, i get the
following dialog box:

There are no solution or project files in this location.  Please select a
different location.

I'm using a 3rd party Source Control Software package, and I can get
everything else to work with it (checking-in/out, etc, etc.).  So i guess
what i'm asking is what causes this dialog to pop up to see if i can figure
out how to get it to work.

Also after I close the dialog, it pops right back up, and the only way to
close VS2005 is through the task manager.