What do you mean that the "Alpha did not work?"

Is should work just fine. It's been tested on many different configurations.

Download the file, then use the "import RFX file" menu entry, and point Realflight to that file ( even if your browser renamed it to a ZIP file ).

Realflight will then say "successfully imported".

Then find it under "custom" aircraft.

In the aircraft selection menu, change the lower left pull down option to read "product - airframe".

This groups the planes according to how they got into Realflight.

Downloaded airplanes will appear under "Custom Aircraft".