Andres,
Thanks for putting my in the right direction by turning on the debug mode.
I found that I was missing a perl module Apache2::SOAP Without this module the basic install of OCS is working fine but it plugins can’t by installed correctly. After adding this module the plugins can be successfully installed
I still have an error installing the runningDatabaseInstances plugin
ERROR: runningDatabaseInstances is an invalid plugin, check your sources.
Installation aborted !
Seeing the logfiles there is no error shown
Rgds,
John