[Edi]

Does the problem disappear when you reduce the number of sprites?

Because all it takes is ONE screwup for the whole thing to crash. I found that out the hard way trying to script more sites into a map file than there are in the game. Instant "sprnbr too high for this file" Något gick fel crash whenever the first province with the incorrect number was accessed (either directly or trying to view nation overview).

So there's possibly something like that. One typo. One misspelling. One incorrect assignment. One mismatch. I suggest you get out the fine tooth comb and get cracking.

Edi