Hello Jonathan! Welcome to the forum.
I presume that this error started appearing recently, as in one of the latest simulator updates? If that is the case, I would recommend you to follow these instructions on submitting a bug report for MSFS directly.
EDIT 2024: Please note that a recent update resulted in the panel causing crashes when viewing an OFP while using DirectX 12 in the simulator. This is also beyond our sphere of influence, but you can find the related discussion here.
While you’re at it, it would be cool if you could post the dump files here as well in case they contain something that we at Navigraph can work with! At the moment though, this seems out of our control.
Sorry for the inconvenience!
Kind Regards,
Malte