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AIFP "Invalid control registration - MainPanel" error!


Resource contributor
I'd been anticipating the application needing to be told where the traffic tools SDK was
The location of SDKs (since FSX) are registered, like the apps.

In regedit, there's no trailing semi-colon (screens shots below), does this look correct?
Your registry entry is identical to mine. So, it's not clear why AIFP is rejecting it. AIFP simply checks that there is a file named Prepar3d.exe in the folder identified by the registry entry. For some reason, your system is failing the final test.

Is your P: drive configured as a standard system disk, i.e. not a network or some other special type of disk?.