.BIN files NEED to be clane out whenever there's been a change to the way FPSC reads/writes segments/entities.
From what I've seen in the source, if you're running a version that's later than the version that created your current BIN files, then it SHOULD recreate them. To be on the safe side, I'd suggest deleting all your FPSC bin files whenever you change versions.
@Airslide:
It looks like his error screen is aiming at a different line than what he said earlier. Have you looked at that line yet? (Not that I expect DBP to be any more trustworthy, lol)
The one and only,