Symlink from modules failed ERROR


in FreePBX Notices i am getting this error:

Symlink from modules failed
retrieve_conf failed to sym link:
/etc/asterisk/chan_dahdi.conf from dahdiconfig/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.

Any clues?

I am running FreePBX 2.9.0rc1.3