6.5 won't start

tried reinstalling it, e license checks out. has been crashing on and off, since 6.5. now I can’t get it to reinstall?
any help would be appreciated.

Problem signature:
Problem Event Name: APPCRASH
Application Name: Cubase6.exe
Application Version: 6.5.1.117
Application Timestamp: 4f3e2760
Fault Module Name: Cubase6.exe
Fault Module Version: 6.5.1.117
Fault Module Timestamp: 4f3e2760
Exception Code: c0000005
Exception Offset: 00000000011992cb
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 9619
Additional Information 2: 9619afe3f3444282329ee66e88ad3ccf
Additional Information 3: 2b9e
Additional Information 4: 2b9ec00c0e795862fe1c996606fe3eb7

How does it crash? how is it failing when trying to re-install? what o/s are you on? Did you try rolling back?

won’t start up

here is the code i get when it fails to start

Problem signature:
Problem Event Name: APPCRASH
Application Name: Cubase6.exe
Application Version: 6.5.1.117
Application Timestamp: 4f3e2760
Fault Module Name: Cubase6.exe
Fault Module Version: 6.5.1.117
Fault Module Timestamp: 4f3e2760
Exception Code: c0000005
Exception Offset: 00000000011992cb
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033
Additional Information 1: 9619
Additional Information 2: 9619afe3f3444282329ee66e88ad3ccf
Additional Information 3: 2b9e
Additional Information 4: 2b9ec00c0e795862fe1c996606fe3eb7

it stalls when it starts loading midi device manager