unable to export to YouTube in FCPX 10.4.3 (installed 6/25/2018)
Every few days I do my usual routine of editing and uploading some 1080p60 videos from my Sony A6500. This has worked fine for many many months (going on years really, hehe) and there has been no change or upgrade in my personal home iMac system that I am aware of (other than I noticed a recent update to 10.4.3 the day I noticed the problem).
After I finish a simple edit consisting of adding a title, doing some simple color corrections, sharpening, end credits, I then share to YouTube. Now I get a spinning wheel of death the moment the YouTube dialog appears. It often just hangs or takes a really long time to let me finally click "next", and another wheel of death, and then finally "publish". After a really long wait, it fails to share, or sometimes successfully shares, but the file is DOA on YouTube and doesn't work properly.
I have done all of the typical things, checked disks, disk space, reset preferences, cleared all caches and render files, even reinstalled FCPx from scratch, tried republishing older projects that have been recently published (like ones from earlier this week in the exact same format), but the result is the same.
FCPX 10.4.3 updated (6/25/2018)
macOS High Sierra version 10.13.5
iMac Retina 5k, 27inch, Late 2014
4 GHz Intel Core i7
32 GB 1600 MHz DDR3
AMD Radeon R9 M295X 4096MB
Final Cut Pro X, Other OS, macOS High Sierra 10.13.5
