The ASL Vassal module has a window to indicate the extension´s directory, but how can be made and place extensions for games like Carrier (VG) or Flat Top (AH) that hasn´t this window?
This is an undocumented feature. If you edit the module’s buildFile, add the attribute specifyExtensionDirInPrefs=“true” to the GlobalOptions component and the module will look in the preferences for the directory containing extensions rather than looking in the default location (which is a directory named <module_name>_ext)