That did the trick thank you!!Koenig,
it looks like you are not getting the installer program started. Try to download the zip file from the first post, unzip and run install.exe.
Gilean, I do not have time right now for any changes, but you can do that in scripts. Check the manual about the script names, which are called before and after a backup operation.
Strange it didn't work through the pluginmanager....