I have installed Windows Live Messenger and it refuses to let me sign in.

Here is the details of the problem.

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Problem signature:
Problem Event Name: BEX
Application Name: msnmsgr.exe
Application Version: 8.1.178.0
Application Timestamp: 45b12d6a
Fault Module Name: kernel32.dll
Fault Module Version: 6.0.6000.16386
Fault Module Timestamp: 4549bd80
Exception Offset: 00001d27
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6000.2.0.0.768.3
Locale ID: 18441
Additional Information 1: 70d4
Additional Information 2: f7869f98793eb028110e40ecc8574869
Additional Information 3: 8e6a
Additional Information 4: a8f67919692504ddd3941740a71751be
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Kindly advise how to solve the problem.