Important Update
Prior to the release, a last minute change to AC3D 7.5 broke compatibility with the X-Plane plugins.
The downloads have now been updated with a working version. If you have AC3D 7.5 (check from inside AC3D via the menu Help->About-AC3D) then please uninstall this version and download AC3D 7.5.02.
the download page is:
www.inivis.com/downloads.html
The latest X-Plane plugins are available from
http://developer.x-plane.com/tools/ac3d-plugin/
Our apologies for this inconvenience.