FSXclax wrote on Jul 15^th, 2012 at 5:09pm:

Thanks, but it doesn´t work. Without IRS-swithches I can´t check if the autopilot works again. So I´m a little bit frustrated. Every time I try to reinstall, restart,... the same black parts in the overhead panel!!!

Strange issue.

Maybe your installer is corrupted. Did you try to download a new installer as said by Pvjinflight?

If not, download it again and try installing from the new installer:

Check-in to Customer Support > Select product > Extended Download Service > Get New Links

Or if it still doesn't work properly:

Check-in to Customer Support then click Product Name > Customer Support > submit a Ticket.

Pinatubo.