African Files Crashing

How do, I'm wondering if someone can help me. Hopefully I explain this well enough because it seems to be fairly confusing.

A group of us are trying to create all of the African nations and seem to be running into a bit of trouble. We created a "base file" where all the African competitions were added to the database and all used that to create our files. We'd "save as" and come back to use that file for all the new nations.

So far we have created: Nigeria, Cameroon, Ghana, Algeria, Burkina Faso, Seychelles, Zimbabwe, Zambia and Mali.

Our problem is that some of the files work together and some don't. I was wondering how this could happen, given that we've created all the files from the same base file?

It's important at this point to say that ALL the files work on their own without any problems and have been tested fully.

Burkina Faso, Cameroon, Nigeria, Ghana and Zambia all work together.

When I add in Seychelles, I get this message:



When I add in Zimbabwe, I get something similar:



When I add in Mali, I get this message:



When I add in Algeria, I get this message:




I have looked in both the Mali and Algeria files and there is nothing wrong with the teams in the divisions. They are all correct with the correct amounts.

What gives?

As I say, all these files have been made with the same base file. Why are some crashing and others aren't?

If anyone can help, I'd be most grateful.

Thanks for your quick reply. I will have a look. By conflict do you mean for the Mali and Algeria issues?