Blocked Plug-in!
2011 MBP running Sierra 10.12.4 and Safari 10.1. Trying to open a .pdf file from Gmail and continuously get the Blocked Plug-in message in the new tab that opens. VERY FRUSTRATING. Don't know when I last tried to open a .pdf from Gmail. I have gone to System Preferences>FlashPlayer>Updates and the NPAPI plug-in is current- version 25.0.0.127. The PPAPI plug-in was not, but I have since installed it, now version 25.0.0.127 as well. Still can not open the .pdf. In Safari>Preferences>Security>Plug-in Settings, Adobe Reader is enabled but there is the warning message ""Adobe Reader" does not support the highest level of security for Safari plug-ins." What in the h-e-l-l do I have to do to get this dam thing working??!! Or is there nothing I can do? Very tired of this song and dance, always having to try to find solutions to these problems that seem really unnecessary....
Thanks
MacBook Pro, macOS Sierra (10.12.4), 16gb ram