Can't import ttml files anymore

I’m trying to import some Norwegian subtitle files that are in ttml format. After clicking import ebook and then choosing the file, it buffers for a few seconds and then I get this message:

It just gets stuck there and doesn’t finish importing. I tried converting one of the files to srt and importing that. Importing the srt file worked but the formatting is more screwed up that way so I’d prefer to just import the ttml files.

It was working about 2 weeks ago when I imported 2 seasons worth of tv shows in the ttml format, so something must have broken recently.

TTML files should work. Please message us on support(at), send us your file and we will try to import it on our end and figure out what’s wrong. Thanks.