Access 2003 Beta file corruption

[Drew]

Greets all

I have just created a database in Access 2003 Beta 2.
I have closed the db, and then tried to reopen it, with no
luck. I get the message "unknown file format".

I've tried opening with Access 2002 and 2000 - same prob.
I've tried opening a new 2003 db and importing the tables
into it - same prob.
I've tried compact and repair options - same prob.

Any ideas? Anyone else have this or similar issue?

cheers

Drew