Classic plugin for 1password 7 for Firefox stopped working

Okay, figured it out. 1Password in the background had put up a popup saying that the browser could not be authenticated, which was apparently blocking any connections from any browsers. Some how that pop up persisted across the restart or maybe it was new on the last time I ran it. But it was behind a lot of other windows, so I didn't notice it until quite a bit later. Once I acknowledged the warning, the browser connected immediately. So, all is good.