Hello,Today I had a problem with the all the PMDG 737 models. The flaps would not extend, it would click and move, but quickly go back to 0. This was only on these aircraft, all others worked fine. I did not download any new things for a few days now. Any ideas?Thanks,Ryan

Ok, I do remember what I did when this started happening. I installed the FS9.1 update. It told me though half way through it, it was not successful in installing it. It would not let me try again, saying it appears to already be installed. It is not though when I go help->about and see the version is 9.0

You can go to the AVSIM General MS Flight Sim forum and do a search to find out how to fix a corrupted install of the update. It was listed back in October.- John