The option to export a FCPXML file for project work sharing between FCPX (because captioning is trash right now in PPro not so good in FCPX either but Scenarist works with FCPX) This option NEVER works. Always errors out, I have never gotten it to work with any project, not once. You might think the xml files are written properly and I just need to change the extension, but nope, Final Cut doesn't recognize it as proper FCPXML file. Please fix this issue, I was pleasantly surprised to see this kind of interoperability only to be sorely disappointed when I could not use it. (I had to change the extension because xml files are not allowed for some reason... guarding against some ancient xss-fu?? o_O)