My 5.1.5 had an error which AC said had happened to one other user in which the DLL's had been unregistered. It was unable to find the network and I had to run a particular special program in AC as the standard utilities would not repair it - I hesitate to announce the program as it may not apply - if this was happening in your production computer I would say to call Guardian Angel Support and tell them it is an emergency and they would call you even on the weekend. The pending renewal screen works fine for me.
