.gdb and Oasis Montaj Viewer 9.3

The Oasis Montaj Viewer 9.3 is supposed to allow me to "View Geosoft Database Files (.gdb), Geosoft XYZ files, Geosoft Binary Files, ASEG GDF and other data files"

I have an Oasis Montaj project database in the .gdb format. There is no option to open this type of file in my viewer, only .gpf and .gws.

Please help!
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