So, there are a couple of new .TIFs that I want to import into an existing LR folder. Under Import the window shows both of those new files, each checked, as the only ones not already in the LR library. So I click on import and one of three things happens: (1) they immediately import, (2) the window goes blank forever except for a message that there's nothing to import, (3) the window goes blank forever with a message "Import in progress...". This is infuriating, expecially since there appears to be no way to escape from this infinite import loop. Note: the newly named files open perfectly in PhotoShop when it is invoked outside of LR. What is LR seeing that PS is not seeing, and how do I correct this bug? Or at least make an orderly retreat from the infinite loop?