Hi Emma, now i understand what is the listener.
In fact, it seems there are two distinct issues :
- global stabiliy of the grader, that loads or not some parts depending on several factors such as os version or very slight differences in the codebase, (usually elsewhere, and that is the big point : what a common moodle developer must know not to break that part....
- Getting the conversion to work, which IMO is separated from the first point.
For the latter there is a lot of litterature now to test the unoconv process and get it to work (not always obvious, buth there are tracks)
for the former, at this time there is NO info at all. the grader construction and the way the parts are assembled are actually opaque. (f.e not yet identified where and how the pdf editor is invoked, after 4 month on the topic !)