Project loading set scene length_unit to f"{Prefix}METERS", but Blender's
enum only defines KILOMETERS, CENTIMETERS, MILLIMETERS and MICROMETERS.
A model with a DECIMETRE (or HECTO/DECA/etc.) length unit therefore raised
on the enum assignment and the file failed to open. Guard with the set of
supported values and fall back to ADAPTIVE display for the rest.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Petru Conduraru
69a4be68e8