Any fix know to allow Zoho CRM Quote to upload to PDF in Windows 8.1?

Any fix know to allow Zoho CRM Quote to upload to PDF in Windows 8.1?

Yesterday I was using Windows 8 and was able to transfer a Zoho Quote in CRM to a pdf file.  Then I updated to Windows 8.1 and now when I go to transfer to PDF, I get the correct template screen, and then get to "Open"  the file.  then a screen pops up that says "Can't open this file.  There's a problem with the file format."

Can you help?