WIXBUG:4443

Ensure that MsiPackages in a Bundle have ProductVersions that fit in a
QWORD, how Burn represents a four-field version number with each field a
WORD.
I didn't want to imply that Burn was somehow making it legal to have major/minor values greater than 255. (That fails to compile in a Product, anyway.) How about:

Invalid product version '{0}' in package '{1}'. MSI packages in a bundle must have all product version fields less than 65536.