Hi Brian,
Thanks for all the information and suggestions. I too have the non HD version that I used for awhile running FS9 on my old computer. I just recently installed the CLS DC-10 non HD on my newer computer. I had all the textures including the KC-10. But the only door that would open, was the main door. No cargo doors would open even though they should. I asked for assistance from CLS and long story short, they sent me the CLS DC-10 HD file. I uninstalled the non HD version and installed the HD version. All the doors open now, but the KC-10 is missing (which is the model I want to fly the most). Which is where I'm at now.
I will go through all the information and see which way I want to try next.
Thanks again for your efforts and information.
Regards
Jim
P.S. I just looked at your location. My sisters' husband is from Pontefract, West Yorkshire, UK. They met and have lived on Grand Cayman for a number of years. Small world!! I live in the US.