I’m experiencing a similar issue to many users all the way back to 2013. When I have a conference it refuses to record!
I have looked in to the Dahdi issue and installed everything, and log/asterisk/full shows that it is attempting to record the conference, but no errors show up, just the path.
Any ideas? I’m using the latest FreePBX, I’ve had this issue on FreePBX 12 and 13. My installation was with the FreePBX 11 Distro ISO.
pbxCLI> dahdi show channels
Chan Extension Context Language MOH Interpret Blocked In Service Description
pseudo default default Yes nb
pseudo default default Yes
pseudo default default Yes
pbxCLI>
All other call recordings work on my instance and the directory where the conference call is attempting to save to exists already.