Why not a legal move?

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Avatar of Bulbapuck

HelloSmile

In this game I decided to play Rac1 but when I try to I get a message that it's an illegal move, why is this?

http://www.chess.com/echess/game.html?id=31424063

Avatar of Bulbapuck

After not working for several hours it suddenly worked :p

So this is solved and the thread may be locked.