i hope you are not especially fond of editing this entry? because i have no idea and if this is not happening again would like to leave it untouched. this said, the next step would be to check the database.
You can purchase this one for only $2.99 until 5th July in Ubuntu Software Center.
No, Edit button is still unavailable
After I edited core/libengine.py, It runs very well!!^^
I think that it was only problem on ubuntu 11.04.
thanks tuxplayer, and eyecreate!!^^
i change the author to you, can you now edit it?