Just recently upgraded from Parallels 5 to 6 and noticed the upgrade of Parallels Tools to 6.0.11990 somehow keeps Silverlight Out of Browser applications from running in a Windows 7 VM. The VM is running IE7, but is running an installed Silverlight Out of Browser application. This SL OOB application worked successfully in the same VM prior to upgrading to Parallels Tools 6. When the app loads, the Silverlight Out of Browser app window frame shows up, but the page says "Navigation to the webpage was canceled". Please see attached screen shot. Uninstalling Parallels Tools 6 does not resolve the issue.