The Hollywood Reporter:

Viacom has suffered a $300 million loss in a Delaware court tied to its 2006 acquisition of Harmonix, the studio that created the Rock Band video games.

Although Viacom sold Harmonix in 2010, it is still paying for the decision to buy the game studio at the height of a boom. A decision late last week by the Delaware Court of Chancery dismissed Viacom’s attempt to escape paying former Harmonix shareholders hundreds of millions of dollars in earn-out payments.

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