Video button crashes Max 7

Robert Baldock's icon

Clicking the "Video" button in the left toolbar crashes Max 7 for me (64-bit Windows 7):

Problem signature:
Problem Event Name:    APPCRASH
Application Name:    Max.exe
Application Version:    7.0.0.16604
Application Timestamp:    546274e5
Fault Module Name:    StackHash_6e38
Fault Module Version:    6.1.7601.18247
Fault Module Timestamp:    521eaf24
Exception Code:    c0000374
Exception Offset:    00000000000c4102
OS Version:    6.1.7601.2.1.0.768.3
Locale ID:    2057
Additional Information 1:    6e38
Additional Information 2:    6e38bb1b8b339567d92c096b7c32852d
Additional Information 3:    4fee
Additional Information 4:    4fee3f1057403b6521f58ba9c367c773

Could it be because Max is trying to use jit.qt rather than jit.dx...?

Robert