Per my News Notam:
New Win 10 Update released 1:26pm 11.14.2014
Update KB4048955
Good News: This is the update we've been waiting for. Prepar3d V3.5 now starts up without a CTD, and is fly-able.
Bad News: There is a new error (Error creating Child Window ... attached). Not sure what that error means yet. Another MAJOR problem is when you initiate IS3 (Instant Scenery 3), the whole thing crashes to desktop. I've got a trouble ticket in to Flight1 on this problem.
Bottom line ... we are not "back in business" yet with Scenery development and re-configuration for V4.1. Sorry, we just have to wait until THEY get THEIR ducks in a row! I'll keep you posted.
I thought I would make a thread on this so you can add any information you come across on this subject.
Doug
Update: Re-Installing Instant Scenery 3 does not fix the problem. It begins to loading process for IS3, then just quits. Windows event log says faulting app is P3D, faulting path is MSVCR120.dll.