I have just tried to use the VssPlugin for a CDT project, but get content-less error messages in the PDE Error Log for all attempts at Vss transactions.
Commits do install projects but nothing seems to add files.

Apart from that it looks to be very promising functionality.

Is there a source version of the plug-in so that these can be debugged?

Windows 2000, Eclipse 3.0, CDT 2.0, Vssplugin 1.6.0.