Has anyone had this happen to them?

Greetings,Just when I thought I had all the issues worked out of my PMDG 737 NGX, they come back again. Here's what happened:I flew the tutorial from EGKK-EHAM with the 2D cockpit and everything was fine from start to, well, almost finish. I landed ok, selected a 60 sec Replay of my landing, and went to the external view of the aircraft. After selecting the external view, NO aircraft was visible (its full shadow on the ground was), NO runway was visible from the 2D cockpit view (only the PAPIs on the left side were visible). Additionally, the cockpit displays were frozen to show 45 KIAS, 0 feet MSL, 27.3% N1, -4 feet Radio Altimeter, command bars slightly above and to the right of straight and level. I selected Replay again (after writing down everything that I just described) and I had a black screen with a white 6 inch horizontal band with brown terrain visual on the top 1 inch of the white band. I had full sound throughout the replay, and because of the black screen covering most of my display, I had no Flightsim tool bar on the top. I hit the ESC key, exited out of FSX and got the "Fatal Error Occured" message. The Warning Stop SIgn also appeared saying "Flightsim did not shutdown properly the last time you ran it. You should reboot the computer." In addition to those, I also got the dreaded SmartAssembly Troubleshooting box to include the message "This feature requires that {smartassembly} is available on this computer. I first got the Smartassembly message a week ago and I downloaded a 14 day trial of Smartassembly to correct the error. Everything was fine for a few days, but the message came back today. BTW, I am STILL within the trial period of Smartassembly. After researching Smartass issue on FSX, I downloaded Visual Basic C++ 2008 per someone's advice. I will let you know if that fixed the problem.Has anyone else experienced this same occurence? I was beginning to think that it was an issue with either UT2 or PMDG 737 NGX? Not sure what to think...any thoughts would be greatly appreciated!! Thanks,John