Are there any updates to this thread? I'm facing the same issues when trying to upgrade from 2011 to 2013. I've tried everything laid out in this thread but I can't get the 2013 network installation wizard to push it out to the clients. I've tried it on machines with both AVG and Windows firewall completely disabled and I still get this error. I submitted a support ticket this past Sunday but have not heard back from anyone.
I have attached the admnetworkinstaller.log to this post. I put it into debug mode first and then I ran two installation tests. One for MPATTERSON-WIN7 like you asked and one for a machine named JACKIE-WIN7. MPATTERSON-WIN7 no longer has AVG 2011 installed on it so I wanted to test it with one that does and one that doesn't have an old version. Both of them fail though.
One other thing is that when I run the Port Query app that I've seen referenced in this thread, TCP shows up as listening fine but UDP shows:
==== End of RPC Endpoint Mapper query response ====
UDP port 135 (epmap service): NOT LISTENING
portqry.exe -n jackie-win7 -e 135 -p BOTH exits with return code 0x00000001.
I have verified that this machine has DCOM, RPC, and WMI running. This test machine has no firewall enabled.