The router that was causing the APS Installer errors is now dead. Over the last couple of weeks, the router was blocking internet on some computers, and blocking lan traffic from other computers. This router literally went hay-wire. Now, it has completely stopped working.
My neighbor and I placed this router at the end of his firing range, and it was the most fun I have ever had with a router. This router is now literally pushing up daisies.
I have not been able to replicate the APS Installer problem with ANY other router. I have tried 5 now.
I have been following ISPConfig for 10 years now, and I must say that the APS Installer is by far, my most favorite function that has ever been added.
Thanks again everyone!