If you receive the above error when trying to download a PDF from the system make sure there are no chapter names that include the following:
- : Colon
- / Forward slash
- \ Backslash
These characters are used by the system and can interfere with certain functions. To resolve this issue you will need to:
- Rename the chapters so that they do not include any of the above characters.
- Download and upload the files once (using "Edit chapter" and then "Save to server") so that new PDFs are created.
- Download the PDF again from the system.