Back to square one: did a quick flight yesterday and had minimization, so it's not the new FSUIPC. However, I was able to repeat the condition where I could prevent minimization if I switched FS from full-screen to windowed mode before AS finished its processing. At times the minimization seems very random. Mike

Hi,Please e-mail me if you'd like to test a build which has been confirmed to solve this problem. [email protected] the next SU4 beta incorporating these changes should be available in the next few days.Thanks!Best,