Hello,
I hope I ain't makin' y'all mad by posting so many reports, but hey, I am tryna help out.
Anyways,
When we go to admin>configuration>features and options>signature.....that notification that says "Note that settings are not applied to existing signatures by default."...so when we click on the "run the process now" button, it says "Session verification failed. Please try logging out and back in again, and then try again." and yes, I did log out and try again but still same error.
Fixed: https://github.com/emanuele45/Dialogo/commit/e18cdb70ad19c9c792c69c8b031bac8f9f8aa745
Das good. And no problem. :)