I'm not seeing an error message exactly like that, though I do see one
with "Master database cannot produce backup." The underlying command for
that is pretty straightforward, (BACKUP DATABASE db TO DISK =
C:\somepath), So I'm thinking either the path got corrupted, a spot on
the disk is bad and making life difficult, or the database got corrupted
somehow.
-- Was any software installed immediately before seeing the errors? Was
the Path environment variable manually adjusted? Just last Friday I saw
an error because of a path had a missing double quote ("). What is the
path?
-- Are there any compressed files or directories? That's the most common
problem we see. They can't be compressed.
-- Has the disk been checked for problems? (On XP: right-click My
Computer/Open/right-click the drive/properties/Tools tab/error-checking).
Ken is suggesting executing from a command prompt:
db backup <database_name_in_double_quotes>
and seeing what that does for you.
Steve
Steve