Hi guys im in the uk i brough real flight g3 updated it to 3.5 trying to register it and i comes up with this ( Unable to remove read-only attribute from copied file: C:|program files|common files|knifeEdge|RealFlight3.reg)
And then says call .... to change registration because someone has already registerd with a diffrent password
ITS USED BY THE WAY
i have all the 2 serials numbers cd case and controller what should i do, does the old user have to send me there password.

Help would be amazing Thx Jk