Hello FN,
Well,,,,,,,,,,,,,,,52.9 loaded just fine,,but,,the plugin would not load regardless of what I did. Even tried a 51.0 load, same thing, "plugin install failed".
After about 15 of those messages following every adjustment I could think of, I went hunting for another solution. Now, getting late into the AM hours, I located directions for a "manual" plugin loading sequence. Was hoping to find something you could use and return the favor but you seem to be running just fine. Instead, I'll post the link here and forward the favor to those who can't get the Uplayer to install. Looks like it comes from the Brits on a Dlink site designed for iOS 10.12 but the great thing is, it worked great on my MacBook 10.14. Probably a simple solution for most but for a lot of us who are still learning the Mac systems it was a real nice find for me. Hopefully this will help some others back to using their cameras on Macs again.
It worked on the FF 51.0 so I loaded the FF 52.9 again and then followed this sequence:
https://eu.dlink.com/uk/en/support/faq/cameras-and-surveillance/mydlink/how-to-install-mydlink-plugin-on-mac-os-10_12
It worked there too, and still working great this morning.
1. Load FF 52.9 and "immediately" disable the auto update in preferences / advanced / update. (otherwise FF will go to 69.0)
2. Follow the steps on the link above and everything starts working with access to the "manage plugin" icon on the address bar.
I believe there is a thread on here for all the Uplayer install problems, hopefully this info will help some of those folks get mydlink working again.
Thanks again,
RK