Same problem with quicktime 7.3.1. Here is the Windows error message:
Problem signature:
Problem Event Name: APPCRASH
Application Name: VectorWorks.exe
Application Version: 12.5.3.14996
Application Timestamp: 472bca4f
Fault Module Name: QuickTime.qts
Fault Module Version: 7.3.1.70
Fault Module Timestamp: 4759d194
Exception Code: c0000005
Exception Offset: 00100e01
OS Version: 6.0.6001.2.1.0.768.3
Locale ID: 1033
Additional Information 1: 7d23
Additional Information 2: c11b8c5744e23a370c57d9841f6e8407
Additional Information 3: 82eb
Additional Information 4: 84a14984cb794db65fc679ea83f06cdd