Sorry, I should have provided more details. I think I'm doing an archive backup, and I'm not using a tape drive. 
The database was backed up using the "Backup Database..." option in Sybase Central. The server that created the backup is running version 11.0.1.2596 and likely SQL Anywhere (not ASE) but I'm not 100% sure of that. I'm trying to restore the backup using SQL Anywhere v16 Developer Edition.
The name of the backup file is Customer-Backup415.1.
When I try to restore using the "Restore Database..." command in Sybase Central I get the above command.
My questions are many, but mostly I'd just like guidance on the best way for me to get a copy of the source database that I can use. Is there a version/compatibility issue restoring backups from a v11 server onto a v16 server? Would an image backup be a better way to get this done? The backup itself isn't huge, it's about 1.2GB.
Thanks for whatever assistance you can provide.
-Tim Callaghan