what exactly is the procedure for getting vassal extensions to work
Downloaded the main module OK but when I try to access any of the extensions all I get is this is not a valid Vassal module

Any clues would be welcome.

It's OK I've worked it out (helps to read the Vassal manual) all you do is make an extension sub folder with the subscript _Ex
then when you load up Vassal then right click on the module and add the appropriate manual. Ok it's no substitute for the real thing but gives you an idea of what to expect from the game and if expansions go out of print a poor substitute is to play the vassal module solitare.

So amused myself by playing the Marathon scenario solo. Probably didn't do the Persians Justice as they lost 6-0 basically they had a hand full of order Heavy Units. (Not a lot of use ) Whereas the Greeks were able to attack the left flank of the persians with the heavy infantry and devaste the flank.

Great game cant wait to get the real modules and I thik I have just bagged a first expansion from Board Game Geek