After I recently did a drag & drop action with several PDF files and let JabRef auto-import their properties/details, I noticed the ISBN to Bibtex-feature stopped working. If I enter (via c&p, of course) any ISBN into the field and hit enter, the result windows pops up for a moment and closes immediately after. Nothing happens, no import, no new entry whatsoever.
Would anyone have a clue as to what could be done to fix this?
If it helps: Windows 7 64 bit, JabRef 2.10.
Note: I am only posting this because I haven't received a reply on the official JabRef forums yet.