I bought a new PC and re-installed all my PMDG products.Right now the -600/700 are fine and dandy BUTthe -800/900 will not fly properly - just after lift-off the speed tape turns into red bricks and the speedgoes down to stall and furtherI remember that I have read something about the correct sequence to install the 737I have a CD version of 800/900 ( also the download version ) and the download version of -600/700 with all updatesWhat is the correct sequence to re-install ?KH

I own only the 800/900 and experience no problems at all. If you don't want or don't need the 600/700 then just use the 800/900 on its own!!RegardsAlan

I bought a new PC and re-installed all my PMDG products.Right now the -600/700 are fine and dandy BUTthe -800/900 will not fly properly - just after lift-off the speed tape turns into red bricks and the speedgoes down to stall and furtherI remember that I have read something about the correct sequence to install the 737I have a CD version of 800/900 ( also the download version ) and the download version of -600/700 with all updatesWhat is the correct sequence to re-install ?KH

I believe it's the 600/700 fully patched and then the 800/900. If that doesn't work, open a ticket with PMDG support. They will have the info.

Hi,I've had the same problem before! First uninstall pmdg737-800 and -900 by using software remove. And than remove the 600/700. Shutdown the computer and startup again and shutdown again. After a new start. go with the explorer to the setup program of pmdg737 and execute it as adminstrator. Then the patch to 1.2 and after all the setup of the 800/900 again run as adminstrator and then the patches.Hope this will helpe youSuccess!Teun

Thanks - will try this . . .KH