>1. I set up an new ODBC-connection. No success.
>2. I copied a backup (older version) of the db in the dir. No ´success.
>3. I Set up an connection for another dbc in the dame dir. That works
>4 I copied the whole dir to another place, changed the path/file-entry
>in the ODBC -setup. Now it works.
>Can someone tell me what I am missing???


That's a new one for me. The issues I've had before where things were working previously and then suddenly stopped were always rights issues. It may be a rights issue here such as a change of ownership for that path, something that went from read/write to read-only, for example. But I don't know.