https://support.microsoft.com/en-gb/topic/fix-an-assertion-occurs-when-you-open-a-modeless-dialog-box-based-on-property-sheet-in-an-mfc-application-in-windows-embedded-compact-2013-6367435a-5496-541b-2d0e-d54552140bfd
Fixes an issue in which an assertion occurs when you open a modeless dialog box based on Property Sheet in an MFC application in Windows Embedded Compact 2013.
open afixassertionmodelessdialog