We are experiencing a problem viewing .pdf files in Groupwise 2014R2 Web Access. I can view Word documents, LibreOffice documents, and images without a problem. However, when I try to view a .pdf file, I receive the following error message:
Unable to view 'test.pdf'
[38444] Unable to connect to the document conversion agent. The document cannot be viewed at this time.

This seems to occur no matter what browser or OS is used.
I enabled diagnostic logging on the GWDVA. The log files seem to show that the file is being created:

02-05-16 10:04:41 DVA: Received Conversion Request from WebAccess for File testcalc-1.pdf Size = 9879
02-05-16 10:04:41 Worker 5 handles Conversion request from <Webacc_IP> (Webacc) for testcalc-1.pdf
02-05-16 10:04:42 DVA: Returned from Worker 5 Output file = /var/opt/novell/groupwise/gwdva/temp/5/out/152b29b8618.html Elapsed Time = 0
02-05-16 10:04:42 DVA: Converted File 152b29b8618.html Size = 11451

I used the watch command to view the output path and see the file appear briefly. So it seems to be generated successfully and is pushed to the "Out" directory.
Are there any other troubleshooting steps that I could take to track this down? I am not sure why the Webaccess client would be "unable to connect to the conversion agent" with this particular type of file when the .html is being generated.

Thank you for any help that you can provide.