I have used registry cleaner with the less aggressive setting allowing compactor on restart in latest version of jv16 Power Tool... result?
Various issues caused by some registry corruption:
-Visual Studio 2013 works only with administrator rights otherwise reports missing component error at the start
-All Autodesk products get license error without administrator rights
these problems, found after few minutes, persist also after jv16 backup restore uninstallation and reinstallation of the affected software, so probably some Windows component became corrupted in registry,
and I don't exclude many others side effects.
I have fixed all these problems with a windows reinstallation, however the regcleaner and\or compactor software are dangerous and need a deep analysis.