Example: Say I'm having Asteroids (rev4), [asteroid].
The the right window for details shows me something like:
Rome Name | CRC/SHA1 | Size | Merge | Info <- Not sure of english labels since using another language plugin myself

| | N/A | | Missing. <- This is the bug (I think)
034602-01.c8 | 97953db8 | 256 bytes | | Ok.
[...]
Hope there is something that can be done about this.
regards