George Lucas is claiming that a "Star Wars" convention has moved over to the dark side.

In a lawsuit filed in U.S. District Court in nothern California, LucasFilm says that Gen Con, a company that puts on gaming conventions, failed to uphold a contract to deliver proceeds from a "Star Wars" memorabilia auction to the Make-A-Wish Foundation.

According to this complaint, Gen Con owes almost $1 million to the charity and to LucasArts for proceeds from an auction held at last May's Gen Con convention in Los Angeles. LucasFilm says it undertook expenses to advertise the auction to increase participation.

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