I am running Parallels 4.0 with Windows Vista Basic through my Boot Camp partition. I downloaded an update to Parallels, which apparently includes an update to Parallels Tools in windows. However, it then tells me that the Windows Installer does not have sufficient privileges to modify a file, which I think I remember being some .ink file. I am think asked to click "OK" to restart the virtual machine, which will automatically launch the Parallels Tools update when Windows starts again. That cycle goes on forever. I had to force quit Parallels to stop it. How can I fix this?