I have just reinstalled FS9 and some of my add ons such as Wilco 737 and PMDG. Configuring for flight (FMS etc) is no problem and everything interacts as it should. Sometime between the take off roll or in flight the engines cut out for no reason and the AP disconnects. Tried Wilco and PMDG 737's and makes no difference. Tried reinstalling FSUIP and Aerosoft products also no difference. Has anybody else experienced this and if so what was the solution. Thanks in advance.