Vassal would not read vdmx files

[plloyd1010]

All that I can think of at this point is that you have a bad copy of the minefield extension. Your solution might be a simple as downloading a new copy.

I removed my copy of the minefields, opened the module (to recreate the extension list). Then downloaded and added a new copy of the minefields (different name). It added okay and I could start a game.

If you were able to add other extensions, you can copy new extensions into the Core_Data--Panzer_Grenadier_Uber_base_module_ext directory, before starting Vassal.