Norton Utilities 15.0 crashes on Win7 Ultimate 64bit

Running Win7 Ultimate 64bit.

Have installed Norton Internet Security 2011 and Norton Ghost 15.0.

After installing NU 15.0, the NU install app successfully installs the software and runs the "update", but then "nu.exe" crashes:

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Problem signature:
  Problem Event Name: APPCRASH
  Application Name: nu.exe
  Application Version: 15.0.0.122
  Application Timestamp: 4cdb69ec
  Fault Module Name: StackHash_632d
  Fault Module Version: 0.0.0.0
  Fault Module Timestamp: 00000000
  Exception Code: c000041d
  Exception Offset: 751d4cad
  OS Version: 6.1.7600.2.0.0.256.1
  Locale ID: 1033
  Additional Information 1: 632d
  Additional Information 2: 632db68fcbdec703b29dc48c33f9d526
  Additional Information 3: c459
  Additional Information 4: c45980f9f72a742fbe389ba5307b4318
=====================================================

 

Have tried rebooting, uninstalling & re-installing, turning off DEP for nu.exe, tried compatibility options, ran as administrator, and even tried disabling NIS temporarily... nothing appears to help -- i.e., nu.exe keeps crashing.

 

Any ideas?