Mac OS X 10.6.8
Latest Zimbra client.
Installed PDF Browser Plugin so that user could open PDF Files in Firefox. Installed plugin in <Macintosh HD>/Library/Internet Plug-Ins/
User then tried to click on PDF attachments in Emails and Zimba popped a blank screen...
Uninstalled PDF Browser Plugin and Zimbra downloads and opens PDF files without issue.
Any ideas how to fix?