Cs 757 Iru Not Working After A Saved Flight

Hi allJust purchased Justflights 757 Captain.This bird is fantastic in all departments except one.When I save a flight and later use the saved flight The IRU switches on the OH are off. When I switch them back on I get a failure message, I understand this because it cant be set up when the plane is moveing, therefore the PFD and ND dont work, hence the flight is over and this means short haul flights only.I know there is a problem with FSX saving instrument states, but this is a major problem compared to all my other add on aircraft of which I can reset all the instruments.Can anyone give a solution to this.SpecsVista 32Dell XPS 4208800GT 512mb Graphics3gb ramBill