Vista MaxMSP close error

Using Vista Ultimate, 5.1.4, i7 based machine, with 6GB of RAM.

Every time I close Max/MSP it simply crashes out rather than closing properly. Nature of the error is:

Problem signature:
Problem Event Name:    APPCRASH
Application Name:    Max.exe
Application Version:    5.1.4.42462
Application Timestamp:    4bd99849
Fault Module Name:    StackHash_fd00
Fault Module Version:    0.0.0.0
Fault Module Timestamp:    00000000
Exception Code:    c0000005
Exception Offset:    06816440
OS Version:    6.0.6002.2.2.0.256.1
Locale ID:    1033
Additional Information 1:    fd00
Additional Information 2:    ea6f5fe8924aaa756324d57f87834160
Additional Information 3:    fd00
Additional Information 4:    ea6f5fe8924aaa756324d57f87834160

is this a known issue?

or is it perhaps a housekeeping issue I need to figure out?