ses to fla conversion is most likely related to attempts to export old Adobe Audition data. This might be doable, but not in this particular instance. Everything points to the fact that .ses files are sessions, something like playlists or similar metadata and as such no export to multimedia formats is doable.
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.