strange problem with G940 logitech

As soon as I use the throttles then the 8 buttons just below the Thr. are not working anymore.

As soon as I put the handles back to almost zero then the buttons are functional again.

Logitech said it has to do with fsx faults which he could determing from some files I sent him.

Is there a tech guy who could read this files and see what could be wrong.

it were the files dxdiag and setup papi and event log etc.

waiting for someone who is willing to check these then I will sent them, may be via email.

thanks in advance

b.t.w I also have x-plane 10 as to follow its develepment but there the throttles work fine with the buttons.

so it must be fsx connections.