Random Group Error.
 

Been working on some campaign files for myself using RSRD as a base. I have all of these in a seperate renamed file outside the game and just use which one I want when I play as I work on files slowly. Anytime I use them they work fine and I get no random group errors with I open any files with the ME.

I wanted a clean copy of RSRD, so I DL it today and saved it to a different folder. When I open campaign files where he built groups, TF, ect I get a engine error basically "random class contains invalid group entry" then names each invalid ship placed in the group. I basically understand this error, if you build single groups with the random gen. I don't think you get a error if you include an invalid class as you would joining ships to a group

Hope that makes sense. On all of my other RSRD DL's I don't get these errors and these are where I made personal changes. I only get it on the
this clean copy I just DL'ed. I'm sure I've done something, but have no clue. Deleted it and tried again and same thing.