Hello, i have a problem during installation of Backup Exec 2012.

I am not able to install Backup Exec 2012.

During the environmentchek it says that the environment is ok.
But i get a strange pop up that says
"The installation failed due to an unexpected error:Absolute Path information is required".

I can go trough the installation to the point where i get the installation summary.
I can click on next, than i get the same pop up an the installation freezes!

The environment is Windows Server 2003 SP2