[DCP-o-matic] UI bug - drag and drop

Hello, It may have already been noticed. Here are dcp-o-matic 1.78 and ubuntu (unity) 14.04 64bits. aim : one dcp from 11 still images (.tif) In file browser Nautilus I've selected my 11 images using ctrl+click. Then I've dragged'n'dropped them onto the dcp-o-matic window. It seems to work but actually the images are "loaded" in dcp-o-matic without any duration* or framerate. I've seen this in the "time" tab. *default duration for still images is set at 1 second in the preferences. If loaded from dcp-o-matic using the import file button, images are correctly set. Though they are not sequenced, alphabetically or numerically speaking. And previewing did not work. Best regards, Gerald.