or rather starts but won't display. I have tried running as admin, and with plugins disabled, as well as uninstalling and reinstalling. As far as I am aware, Calibre was already running when this started, and there was nothing new on the computer, no new installs or changes. Alt tab to switch to Calibre shows a blank white window with the calibre title, but the window doesn't activate. I have also tried deleting the metadata.db file. Debug info attached, note
ApplicationPaletteChange event message continues to display every minute or two
