SyntaxError: Error 1132 (JSON)

Trying to run Realm of the mad god on flash player and encountered this

SyntaxError: Error #1132: Invalid JSON parse input.

  at JSON$/parseCore()

  at JSON$/parse()

  at _-14U::_-0eY/_-Cm()

  at _-14U::_-0eY/onComplete()

  at _-3i::Slot/execute()

  at _-3i::_-0ed/dispatch()

  at _-OH::_-VO/_-0zO()

  at _-OH::_-VO/_-0Cx()

  at _-OH::_-VO/onComplete()

  at flash.events::EventDispatcher/dispatchEventFunction()

  at flash.events::EventDispatcher/dispatchEvent()

  at flash.net::URLLoader/onComplete()

I have no idea what to do and after clicking continue nothing has happened.

Please help ^^