Try the forward merge trick first. Merge in the AC 13 template file. Sometimes that fixes whatever is wrong.
Although a clean reinstall at this early stage might be better.
Don't forget to remove your USB dongle first.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"