.gdb and Oasis Montaj Viewer 9.3

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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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