Large modules break NSFe file export

[TakuikaNinja]

I believe this issue has been present ever since the NSFe file export was added in 0CC. Trying to export an NSFe file from a large module (multiple songs, large samples, expansion chips enabled, etc) generates a file, but players like NSFPlay will report the following when attempting to open it:

I assume it has something to do with how NSFe handles bankswitching?