SYMLINK Error

I am new to TRixbox and FreePBX and been learning as i go along. However i recently upgraded FreePBX to 2.8.1 and am now receiving this error on the status screen. Can so one tell me what needs to be done? Any help would be appreciated.

retrieve_conf failed to sym link:
/etc/asterisk/chan_dahdi.conf from dahdiconfig/etc
/var/lib/asterisk/bin/fax-process.pl from fax/bin
/etc/asterisk/sip_notify.conf from core/etc
This can result in FATAL failures to your PBX. If the target file exists and not identical, the symlink will not occur and you should rename the target file to allow the automatic sym link to occur and remove this error, unless this is an intentional customization.

Thanks

delete it also and let it symlink.

I deleted all the files and know only the error below comes up. Any suggestions??

retrieve_conf failed to sym link:
/var/lib/asterisk/bin/fax-process.pl from core/bin
This can result in FATAL failures to your PBX. If the target file exists and not identical, the symlink will not occur and you should rename the target file to allow the automatic sym link to occur and remove this error, unless this is an intentional customization.
Added 8 minutes ago