Creo File version mismatching installed Student Edition

Hello,

I have been having problems with my Creo 9 (Student Edition) installation.

When I try to open the Surface Finish Gallery or the Hatching Configurator I keep getting the warning that the corresponding file "was created with a commercial version of Creo Parametric and is not compatible with the Creo Parametric Student Edition (for educational use only) you are running." after which the program shuts down completely.
I am sure this problem extends beyond the mentioned configuration files.

A re-installation of Creo did not fix this (neither did a second one).

There has not been any other version of Creo installed on my computer, nor have I uses any other license apart from the Student license I am currently using.
Is there a way to fix this problem?
Is it even wise to use the most recent version of Creo or are previous versions generally more stable?

Thanks in advance for any input.