I'm thinking about HISE as a future sampling and synthesis playground, for sharing instruments with other users. The important sampling aspects look to already be in place and just a few additions to the synthesis could make HISE very attractive to a wide range of users, likely generating more interest in HISE from end users like myself.
Actually it keeps a list of recent projects in the app data folder and I don't think the uninstaller removes these (the installer routines are still pretty simple). I didn't see that error for myself for years :)