Windows Live Mail 2011 keeps crashing - what to do?

I have Windows Live Essentials 2011 installed on my Fujitsu Siemens Laptop. Whenever I log in to mail, I type in my username and password, I read a couple of emails and then it crashes!

This is the problem details that come up every time:

Problem signature:
Problem Event Name: APPCRASH
Application Name: wlmail.exe
Application Version: 15.4.3538.513
Application Timestamp: 4dcdb9d1
Fault Module Name: StackHash_2264
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: 1929a8ed
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 2057
Additional Information 1: 2264
Additional Information 2: 2264db07e74365624c50317d7b856ae9
Additional Information 3: 875f
Additional Information 4: 875fa2ef9d2bdca96466e8af55d1ae6e

Read our privacy statement online:
Windows 7 Privacy Statement - Microsoft Windows

If the online privacy statement is not available, please read our privacy statement offline:
C:\Windows\system32\en-US\erofflps.txt

Please can you help!

Do I have to reinstall it or anything else?

Thomas

Hi N0b0dy,
I am now running wlarp.exe - will tell you results in a few minutes!

Thanks for your help and quick reply

Thomas

It works perfectly now!

Thanks again for your help!

Thomas

Sorry, WLM just crashed again!

Any other suggestions??

Disk Cleanup and error checking via "c: >>properties (General tab and Tools tab)".
sfc /scannow via command prompt.