Hotcopy on AIX - not a valid primary database file

We have some problems using hotcopy on a IBM AIX based server. We are using the newest 3.70a runtime environment, but we are receiving this error: The source file /lon/370/370_lon01fs/db1 is not a valid primary database file. Any suggestions? 0)root@odnav02:/dt01/prg01fs/backup# /dt01/prg01fs/370/370_lon/hotcopy source> Backup W1 3.70.A Backup Tool for Microsoft Business Solutions-Navision version 3.70.A Copyright (c) 1987-2004 Microsoft Business Solutions ApS. Backup started at 2004/07/21 13:38:57. The source file /lon/370/370_lon01fs/db1 is not a valid primary database file. In the source section of the command line, the first argument has to be either a primary database file, or a setup file. In the setup file, the [Backup Files] section must start with the primary databa se file name. Backup ended with an error at 2004/07/21 13:38:57. 0)root@odnav02:/dt01/prg01fs/backup# hot.ini file [Backup Files] /lon/370/370_lon01fs/db1=/hot_bk/hot_bk1fs/ /lon/370/370_lon02fs/db2=/hot_bk/hot_bk2fs/ /lon/370/370_lon03fs/db3=/hot_bk/hot_bk3fs/ /lon/370/370_lon04fs/db4=/hot_bk/hot_bk4fs/ /lon/370/370_lon05fs/db5=/hot_bk/hot_bk5fs/ /lon/370/370_lon06fs/db6=/hot_bk/hot_bk6fs/ /lon/370/370_lon07fs/db7=/hot_bk/hot_bk7fs/ /lon/370/370_lon08fs/db8=/hot_bk/hot_bk8fs/ [Options] servername=370_LONTEST kommando hotcopy source=hot.ini