Capture One crashed and won't start up.

I had C1 open, I was attempting to change sessions. The program crashed and I got a message that the plugin for JPGMini failed (I wasn't trying to use it). When I try to re-launch I get the "Let's get started" message, as if it's a fresh install. I click that, and it takes me to the authentication login, but then I get the "An error has occurred, please try again" message. I close that, and the Capture One Crash Reporter opens. The report has to be hundreds of lines long. I've tried a few times, downloaded and reinstalled, but it's not launching.