I just started up the aircraft I used in the picture, a Boeing 717 with an Airbus panel that I put in, and everything worked normally. What irks me is that sometimes it happens and sometimes (most of the time) it does not. Of course I shut down the APU generator after engine start. I don't think it is a starting procedural, rather a bug in the software somewhere. I've been simming for more than 20 years and know how to start an aircraft. This bug has only been happening recently. I have lots of add ons, from aircraft to panels to scenery, a lot of moving parts. I think there is a conflict somewhere but I don't know where.