So I have been working with remote support from TrackIR with Jeff....no fix.

Here is the problem; a few days ago TrackIR stopped recognizing FSX. I have uninstalled and reinstalled (clean) FSX Deluxe at least three times. I have done registry edits for any and all FSX/Simmconnect related keys to no avail.
I have manually installed the simconnect.msi still did not fix it...I am unable to continue asking TrackIR for help as Jeff feels it is not TrackIR's fault rather a an FSX issue. Anyone out there have a solution? Need more Info? Please reply and I will respond asap...I have been FSX less fro three days now as I reuse to fly w/o head motion.... btw I uninstalled all addons (aicarriers, planes, ORBX scenery, REX etc) ....FSX....so lost w/o you.....sniffle sniffle.....almost thinking about Lockheed Prepar3d.....

Well if everything else was working fine and TrackIR was the only problem it does sound like it is his problem.

Try rolling back to a previous state when track IR was working. It could be your drivers.