Occasionally Vassal seems to do weird things. This time it created a ZonedGrid entry for at least 2 extensions. The error will cause the extension to deactivate for the game when the extensions are loaded. It also prevents the extension from being loaded in the editor.
So far, the only released extension I have seen this in is the Airborne German leaders. That extension has been fixed. If you use it and Uber base v2.4, you should download the extension again.
Let me know of any other extensions found with this error. It is an easy, though rather manual, correction.
... More and more, people around the world are coming to realize that the world is flat!
The dialog window tells you which extensions are being loaded. Ones which fail with this (and probably other) error will say they are being deactivated. They are not deactivated in the extension list,just in that game.
I have checked a few extensions. I've only seen it in the German Airborne and German Fall of France leaders. The FaoF leaders are not surprising since I used the Airborne extension as a template for them.
German and Italian leaders from AfKo have been fixed and corrected versions uploaded.
2nd GW in New Guinea will be replaced with an OOB-Ldr extension for the 2GW Imp Germany Seebataillon in the June update.
... More and more, people around the world are coming to realize that the world is flat!