If for some reason you mess up Vista OSX or the other way around, and every time it tries to uninstall it stops respondong then you are like me.To uninstall it:

1)Take ownership and delete C:/Vistaosx folder

2)Goto C;/Windows/System32/ and delete all files with .final09 extension.

3)Do the same in C:/Windows/Branding folder.

4)Then run sfc/scannow from run as admin, to restore proper system files