I had not used SpamSieve for a while as I had too many false positives and even when I trained them they popped right back into Junk. But too much spam that Apple Mail isn’t catching so wanted to restart SpamSieve. I happened to choose they day of the update which may be involved but I think I updated when I first went to SpamSieve application to set preferences to Less Aggressive. I re-ticked the SpamSieve rule in Mail (7.3). When I tried to close Preferences the window stayed there. (Force?) Quit Mail then restarted with new version of SpamSieve.
Now Mail just hangs and never shows me a window. Can I restart Mail without plug-ins? Edit the plist?