Thanks. Your step 3 might also fix my problem of woai not working in p3d v2.
I will try it tonight.
I was pretty sure the aircraft folder was causing a problem but didn't know if I should copy into the airplanes folder as I assumed this would make the selectable aircraft list massive and might impact load times.
DylanM, when I used the WOAI installer the dropdown from fs2004 to fsx was greyed out so when I navigated to the p3d v2 folder the only exe it could see was fs9.exe.
Cheers