FWIW I just completed an in-place upgrade of Windows 7, essentially overwriting my OS but keeping programs and settings intact. Although my project file is working, one time I loaded it and got the ntdll.dll crash again. I also got a QL spaces crash again just now.
Description
Faulting Application Path: C:\Program Files\Steinberg\Cubase 8\Cubase8.exe
Problem signature
Problem Event Name: APPCRASH
Application Name: Cubase8.exe
Application Version: 8.0.20.468
Application Timestamp: 5547e4e7
Fault Module Name: ntdll.dll
Fault Module Version: 6.1.7601.17514
Fault Module Timestamp: 4ce7c8f9
Exception Code: c0000005
Exception Offset: 00000000000532d0
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 5561
Additional Information 2: 5561827788acadc3b174171ab4c4c005
Additional Information 3: 470c
Additional Information 4: 470ca32303014c28f72236c45510a098
Extra information about the problem
Bucket ID: 7760952