I have been trying to upload a file converter within assignment feedback/plugins so that when assessors are marking in the left side of the assignment they are able to view the assignment and make annotations but don't seem to be able to make this work. I keep getting an error message:
"Cannot open PDF. The file may be corrupt, or in an unsupported format"
Would anyone have come across this before and if so any pointers on what I may be doing incorrect.