I just installed Vassal 3.6.4 and now when I open the Terraforming Mars module (version C2.1.0) the maps are missing. Using the Wizard, the list of maps to select from is empty. When I try to open the module with the extension (TfM_Colonies_1.0.vmdx) activated, I get the following messages in the log:
Terraforming Mars version C2.1.0
Unable to load extension TfM_Colonies_1.0.vmdx: Could not find Tharsis-Orange in Map Boards
I can replicate this, but for whatever reason hitting āNextā to skip past the first Select Board picker (which as you indicate is empty) brings up a second Select Board picker that is populated with choices. From there things seem to load and work OK.
So I was taking a peek at the module with the editor and I noticed 2 Map Boards items (see image) under the Main Map [Map Window] which might explain the 2 selectors appearing in the wizard. One Map Board is empty and the second one contains the actual boards. Checking the Main Map under vassal 3.5.8, the first empty Map Board is not there; so is it something 3.6.x is adding if it canāt find one as the first thing in Main Map?
Due to changes in the way At-start stacks and Decks are handled, the BoardPicker component (āMap Boardsā) needs to be defined above and At-start stacks and Decks.
Iāll probably handled this via a Validator that will complain when you try and save the module where you have moved the BoardPicker down below a Stack/Deck.
Thereās a build going up now (BoardPickerBeforeStacks) that warns of the double [Map Boards] and when Decks or Stacks are created before the Map Boards. I canāt stop the new [Map Boards] being created, but this should make it clear how to fix it straight away. Would appreciate it if you could reproduce the issue and give this a try.
I was able to find the build on the GitHub site and get it installed. Your validator appears to be working; I got a warning from the editor when I tried to save the module with the Map Boards in the wrong place and when I tried to save with multiple Map Boards.