Parallel processing on PP2017R2 on RHEL7

Dear all,

I recently installed the brand new R2 version of PP 2017 on a RHEL7 machine. To my surprise I had to notice that each protocol where parallel processing is specified failed to execute with a nice error like that : 
"An invalid index value (1736067536) has been detected; legal values are between 0 and 1"

The same thing works fine on a Windows Server. Is this a bug and known issue? How can I "repair" that?

Thanks in advance.

Peter Schmidtke