You cannot exactly convert a lone .cue file to any other disk image format, including DiscJuggler .cdi files.
You will need a .bin file which should have same file name as the .cue sheet and contains the actual disk image itself. Without that, the conversion is impossible.
This conversion entry was verified by us and conversion was flagged as wrong or not possible.
Usually this happens when the conversion would try to convert different types of data between each other, such as audio to image, or it is not possible because incompatibility between programs, caused by closed file formats, very limited support etc.
If you find entry that you feel is flagged as bad wrongly, please tell us in the discussion below with as much as information as possible so we can fix it.