Goldmine version 3.20.61107 installed on Windows 10

I am using this Goldmine version for years and years now with satisfaction.
I have only 1 problem:
when i save a pdf file in the "Links" tab the column "Type" stays blank.
In earlier windows versions the type was filled with the text:
.
Can somebody tell me how i can have the result, that GM was fill in the Type column with "Adobe Acrobat Docume" again ??

Thanks for your inputs.

regards,
Arjen