I upgraded by desktop to Ubuntu 17.04 today and now I get this when I try to do a software update:
W: GPG error: http://deb.playonlinux.com trusty InRelease: The following signatures were invalid: 74F7358425EEB6176094C884E0F72778C4676186
I removed the repo and key:
$ sudo apt-key del C4676186
$ sudo rm /etc/apt/sources.list.d/playonlinux.list*
$ sudo apt-get clean
$ sudo apt update
However, the error persists. How do I fix this please?
I have the same problem. Running the same version of Ubuntu.
The same thing :)