Thank you @anon892024 for your quick response.
I already had a GNBDC.p8z in my Paratext folder. However on my computer the Paratext folder is in a non-standard location, E:\My Paratext 9 Projects_Resources. That could also contribute to the problem.
I tried by creating a Paratext folder and a _resource folder under my C drive, just in case. But it didn’t help 
PS: I started building a concordance using Access (to get the ball rolling)… so when the team who’s going to look into the issue will have a solution I’m happy to test it.
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