Tried to play a game as Sphons for a science victory, but it turned out to be impossible.

After researching the entire tech tree (i.e. there was nothing left to research) I still only had 4 of the 6 required techs as indicated on the victory overview screen.

I've attached the save game.

ScienceVictoryBug.zip

Good to know, thanks. I did check the first couple of pages and a google search, but found no reports.