I recently installed Votive on Vista and noticed that the project templates weren't showing up when going to File/New Project/WiX. I haven't dug into it deeply yet, but I suspect that it has to do with running devenv.exe /setup as part of the setup and devenv.exe is not being run as an administrator. Consequently, it didn't get set up correctly. I'll be looking into it in more detail and fixing it, but in the meantime you can do a really simple workaround:

• Make sure there aren't any instances of Visual Studio 2005 running
• Open up a new instance of the Visual Studio 2005 Command Prompt, running as an administrator
• Start menu / All Programs / Visual Studio 2005 / Visual Studio Tools / right mouse click on Visual Studio 2005 Command Prompt and click "Run as Administrator" (if on Vista)
• Type "devenv.exe /setup" and wait for a few seconds or up to a minute until Visual Studio finishes its setup (you won't see a UI but you can watch the progress of the devenv.exe process in Task Explorer)

That should fix the problem and you should now see the project templates.