[weaponsgrade]

Thank you very much. Yes, it was installed in the defaust program files location. I will do that. I had thought of uninstalling all and reinstalling all in my home folder, not really much different from what you suggest, but thought better to ask first. One point I had forgotten to mention is that I called Naturalpoint tech support and walked through some issues, one of which was that because TrackIR would only start onscreen as admin, then IL2 had to be too. Putting them both in my home folder would eliminate some permission issues if I am correct.

Should I even bother trying to install the mods again? Can I expect the problem to persist? I will not until and unless I feel reasonably assured that it can be done without problems.