Unable to read group information from repositories. this is a problem with the generation of your install tree

Sorry for my bad English.

I’m trying to install FreePBX. Downloaded image FreePBX-32bit-6.12.65.iso.
Checked md5. I burn iso to DVD.
After setting up the network, the time and the file system error occurs "UNABLE TO READ GROUP INFORMATION FROM REPOSITORIES. THIS IS A PROBLEM WITH THE GENERATION OF YOUR INSTALL TREE"installation is interrupted.
The network is configured exactly right, I switch to the console and can ping any site and name and address.

My computer is new. Live Ubuntu is running without any problems.

Tell me what to do? I’d like to install FreePBH /

Thank U.

I have the same problem with FreePBX-64bit-10.13.66.iso when I try to install it through a virtual CD-ROM, configured in Supermicro IPMI remote console to use the ISO image on a Windows share. I tried both FreePBX 10.13.66 with Asterisk 11 “Full Install” and “Full Install – Advanced”. There was such bug in RedHat back in 2010 (https://partner-bugzilla.redhat.com/show_bug.cgi?id=613576) with accessing CD-ROMs, but it was fixed then. Probably SchmoozeOS has the same problem?