Starship Troopers gif missing

The Starship Troopers VASSAL modules is giving an error when you try to select counters. Also some counters can’t be dragged onto the map - I suspect for the same reason. Can someone who is a VASSAL expert take a look at this. I’d like to play it. Or does someone have a working version?

I am a VASSAL user but a noob at module design. I might be interested in fixing it.

Also how do you know that AH (or its current organization) has given permission to post this module?

Thanks in advance.