When I do have one of those frustrating times wth AFT, I have found that trashing the prefs file located in the Preferences folder in the user Library, trashing the Google folder in the Application Support folder, and trashing the mtpviewer file in the Saved Application State folder can help. The user Library is an invisible folder, so you will need to use the Terminal app or another utility to make this folder visible.
I use Onyx, a free app that is a great system maintenance tool to make the user Library visible. Once visible, you can drag the folder to the side bar of a Finder window so you don't have to go through the hassle of making this Library folder visible again.
I use Onyx, a free app that is a great system maintenance tool to make the user Library visible. Once visible, you can drag the folder to the side bar of a Finder window so you don't have to go through the hassle of making this Library folder visible again.