import problem with v. 13.3

Since the latest update, I cannot get import to work. I select the source and destination directories (plenty of room on destination). I then click the import button on the right side. Nothing happens except that the left hand import button gets grayed out. I tried leaving it to run overnight but the status didn't change, and my pictures aren't there. If I exit and restart LC the left import button shows again, but the result is the same.