Chunked (>100MB) upload failed with "Internal error: Server failed to store temporary file." An immediate retry from same screen (clicked on "retry failed uploads") succeeded.
Thumbnails were not correctly generated.
The two files are now called:
(failed at first; succeeded on re-try)
But when they uploaded to the stash, they were called
לוח שנה 2015-1 -print.pdf
לוח שנה 2015-2 -print.pdf
Time of upload is Feb 10th around 5PM Pacific time.