I have come across a bizarre issue for a single user that downloads PDF files from SEI database. She started getting the following error when opening the file and then trying to save it:
‘The document could not be saved. There was a problem reading this document (21)’
When you click on the download link and just click save and not open, it can save fine. I disabled the standard preferences such as enable protected mode on start-up, and enable enhanced security, this made no difference. Then I disabled 'Save As optimizes for Fast WebView' which allows you to save but then produces a new issue. When you open the saved PDF you get the following error:
‘Cannot extract the embedded font 'TradeGothicLTCom'. Some charchters may not display or print correctly’
None of the text is readable. We have uninstalled and re-installed Adobe, updated and downgraded, restored system to last week’s restore point, ran scans, which has made no difference.
I have also just received word that the following error is occuring for another user now: The document could not be saved. There was a problem reading this document (21)
Any ideas? They are currently using FoxIt Reader as an alternative PDF viewer.