I mostly keep the clone so all other original files a linked to my edited file.
When I made the Brits I clone the original units name ok I did change some but not all and I did it bit by bit and went into the game to test it. but I now think back on my problem I didn't do it this way I just clone all the units in one go and rush it through thinking that I will save some time in building this mod and then save it maybe that was my fault and I got this error
I think I will have to just do the germans bit by bit and test it then move on to the next race like this.