how do I open a solution that has a vdproj in it in VS2010?

Question

I think the correct answer is "just open it" but I can't because of this error message:

I'm using VS 2010 10.0.40219.1 SP1Rel. Is there something I have to install to get it to open solutions that use vdproj files?

(changing over to a Wix file is not an option)

Answer 1

The solution to this was to re-install Visual Studio 2010. Lame, but it worked. I looked for a config utility for the VS2010 install (the usual Repair, Remove, Configure dialog) but couldn't find it.