Connection PP20 to DS2020 via perl webscript not working

Hi,
some protocols such as ADMET predictors in Pipeline Pilot present a result with the DS molecule viewer. (Sends molecules to Discovery Studio for display and further interactive analysis. All molecules and their properties are preserved.) Its a button that links to a Perl script (view_results.ds_pl) that should open DS2020. However in the current installation it simply downloads the perl file and does nothing. Is there a way to fix that, register components or install additional files again? Workaround would be to export the SDF or just read the SDF in the perl script and open it from there, but thats manual and not automated.
Thanks