Finally got around to flying from Lymm Dam, went west to Warrington, then headed south for a couple of minutes, then got the dreaded FSX crash in Vista again. The IVAO screen box went white as the problem arose, I suspect the IVAO software has a problem with Vista, as I only get this happening on IVAO. If I knew how I'd run IVAO in the XP emulate mode........ Frank T.