Ligthroom 5.5 stops working when I try to import pictures. Ligthroom waits some seconds and I have the window telling me that a problem has occured; the program will stop. I neve had the dialog window asking what disk or folder I shall import.
I have found the issue. I have recently installed Nokia Suite for my phone. Since this phone can take pictures, I suppose that Ligthroom was expecting it to be there. When I connected it, Ligthroom was happy.
It's not normal that Ligthroom crach when a phone (or a disk) is not connected. En experiment should be done with USB keys also.