Msn sign in problems

Hello,
can anyone help everytime i go to sign into messenger i keep getting a error message the message s

Runtime Error!
Program: C:/Program Files/Windows Live/Messenger/msnmsgr.exe

This application has requested the runtime to terminate it in an unusual way
Please contact the appication's support team for more infomation


I have tried uninstalling and installing again but i'm still gettin the same message
PLEASE HELP