Hi,
I changed the lines from
Incoming Log File=C:\operamail_incoming_log.txt
Outgoing Log File=C:\operamail_outgoing_log.txt
to
Incoming Log File=C:\Users\Olaf\Desktop\account1_inlog.txt
Outgoing Log File=C:\Users\Olaf\Desktop\account1_outlog.txt
Now it works just like intended, seems Opera for any reason doesn't like the root directory C:\
Thanks for your help