Hmm. Maybe it's got to do with Vista's way of hiding to "real path" of
files. Actually/physically the database is in "c:\program
files\firebird\security2.fdb". But you can also "find it" via
"c:\programme\firebird\security2.fdb". But I assume that firebird's
got a problem with that. Firebird maybe "thinks" that it is a
different database.
I remember the "old InterBase times" when you could corrupt a database
by accessing it via two different paths.

But when I try to backup the security2.fdb via "program files" I get
an error with a truncated path

I/O error for file "c:\program"

Of course I quoted the path to the database in the command shell.

--Heiko