I plugged in SPAW original and choose South Pacific '43-44 campaign - Japanese.
Is "SPAW original" the planeset that you tried?
Also the original SPAW theatre had 302 targets, and the new one has 308. Depending on where the six new ones were placed they would throw out the "Target Code" and "Base Code" lists.
Values from these are used in the career/campaign files, and
at this stage I do not think that these files have been updated.Hence if base 44 was a Japanese base, but one of the new bases has come in as base 25 then the old 25 is now base 26, and the old base 26 is no base 27 and so on.
The old base 44 is now 45, and if the new base 44 was an allied base when the exe reads base 44 it will set you on an allied base.
So at this stage single missions and multiplayer missions are the way to go for testing the new theatre.
With so many targets and TMods plenty of bugs may well surface, so we appreciate any feedback
If you do make a report of a problem then please let me know the name of the exe that you selected to use, so that we can try to re-create the problem and make a fix.
Edit:
This is what happened when I tried
Base 178 for the 78th Sentai IJAAF is now HMS Victorious
However, it makes no sense to edit the career files until the theatre has been tested in single missions and finalised.
Some issues may require a target/base to be moved, and that can also change the "Target Code" and "Base Code" lists.
Jel