UnsupportedBitmapFormatException

A bitmap was written at a format version, or with a container kind, this build does not know.

Distinct from CorruptBitmapException for the reason the core keeps UnsupportedFormatException separate from CorruptSegmentException: the bytes are intact and reporting them as damage would send somebody looking for a disk fault. The container kind byte exists precisely so a denser encoding can be added later, and a build that predates one has to say so rather than guess.