Thanks to all who sent ideas / comments / advice to solve my problem.
In the meantime I contacted the vendor of the DLL but up to now I  
don't have a solution.

Bernhard:
The module below named TrialsWin contains some experimental code to  
read / modify environment variables (e.g. path) within BB. I used it  
to set path and to check if BB is able to see the correct value.

Best regards,
Rainer

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