Running Prepar3dv4 on Windows 10-64 bit system. Installed pmdg b737-800/900 several months ago. Experienced a blue screen issue in August 2018, and had to have a new cpu and motherboard installed. Reset Prepar3dv4 and re-installed pmdg b737 and a few liveries. Everything functioned properly. Decided to download B737-900 United (merger) w winglets and KLM. Attempted to load PMDG B737 and got a Activation ID key request. I submitted the Product Key Code ID that is on the invoice and I am receiving, ERROR: Activation library handle creation failed, (50003,71000,10104). After activation failure, Prepar3d loads the aircraft, the system setup program doesn't run, got a dark and cold aircraft that can't be started. I've tried uninstall both pmdg 737 files as well as prepar3d v4. I cannot clear the error. HELP, what am I doing wrong?