[NetWorker 7.6.1] save group failed with error

I use NetWorker version 7.6.1. Client OS is solaris10 we are fialed In path /.I got error

:  /dev/.zone_reg_door has different dev, but not a mount point
:  /dev/.devfsadm_synch_door has different dev, but not a mount point
:  /etc/dfs/sharetab appears to be a mounted file
:  /etc/saf/_cmdpipe has different dev, but not a mount point
:  /etc/sysevent/devfsadm_event_channel/reg_door has different dev, but not a mount point
:  /etc/sysevent/devfsadm_event_channel/1 has different dev, but not a mount point
:  /etc/sysevent/syseventconfd_event_channel/reg_door has different dev, but not a mount point
:  /etc/sysevent/sysevent_door has different dev, but not a mount point
:  /etc/sysevent/piclevent_door has different dev, but not a mount point
:  /etc/mnttab appears to be a mounted file

How to fix this?