Unable to uninstall Plesk from server

[AleR]

When I execute the uninstaller, it hangs with error and the log says:

=== Logging stopped: 02/10/2009 10.05.25 ===
MSI (c) (54:54) [10:05:25:524]: Note: 1: 1729
MSI (c) (54:54) [10:05:25:524]: Product: Parallels Plesk Control Panel 8.6.0 for Microsoft Windows -- Configuration failed.

MSI (c) (54:54) [10:05:25:540]: Attempting to delete file c:\temp\1\3983f30.mst
MSI (c) (54:54) [10:05:25:602]: Unable to delete the file. LastError = 32
MSI (c) (54:54) [10:05:25:618]: Grabbed execution mutex.
MSI (c) (54:54) [10:05:25:618]: Cleaning up uninstalled install packages, if any exist
MSI (c) (54:54) [10:05:25:618]: MainEngineThread is returning 1603
=== Verbose logging stopped: 02/10/2009 10.05.25 ===

Please, I want to remove it!!!