As always, make backups!
Over the past month people have reported to me all sorts of weird things:
- OBJ geometry moving with every export
- Blender Objects moving after every export
- Animations spiraling out of control
- Even simple renaming Blender Objects and restructuring of the Blender hierarchy might trigger a bad export.
And the only cure was to apply all transformations or restart Blender!
Thanks to your bug reports and e-mails I was able to track down the source: all these problems were facets of the same bug!
To make a long story short: I have a fix for XPlane2Blender, but other Blender exporters and users may not be so lucky. I've filed a bug with Blender itself, but that is nothing to worry about for X-Plane artists.
Please continue to send me your bug reports! I do read every one of them, even if I don't get back to you right away.