This morning, I had to power down my iMac with Yosemite, TotalFinder 1.6.14 and many other extensions. Smart Mailboxes stopped working in Mail and the Feedback Assistant crashed while submitting a ticket. When restarting, TotalFinder didn’t launch. I checked my Login Items System Preferences and TotalFinder is listed (pic attached). I removed TotalFinder from the Login Items and chose it again, restarted and it loaded the second time. I doubt this is a TotalFinder issue but I thought you might have wanted to know.