September 27, 201312 yr Hi, I bought and installed the 737NGX 800/900 base pack. I then installed the SP1c. Now I try to install the 600/700 expansion pack and it gives me a message saying ''The setup has detected no version of PMDG 737 6700 NGX RTM is installed. Could anybody please explain what is happening or what I'm doing wrong. Thanks Ethan
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