This could be two different bugs.
- If you get the error after the last subtitle line (usually at the end of files) then it’s the bug which is fixed in 1.32.6.7468 that @FordGuy61 already mentioned.
- But if you get the error after seeking/jumping in the file then it’s the bug that I reported here: LG C9 TV: Conversion failed. The transcoder exited due to an error happening occasionally - #68 by cremor