Free EC2 Health Monitor Tool - Error while connecting

Free EC2 Health Monitor Tool - Error while connecting

Hi,
 
I've installed Free EC2 Health Monitor Tool in my system.  After entering Amazon Cloud Provider Credentials and on clicking Connect, I could see a dialog showing Fetching..., but after few seconds I'm getting an error that reads as shown below: 
cloudproviderimage has encountered a problem and needs to close.  We are sorry for the inconvenience.
I've also attached the screenshot of the same.  Can somebody help me out in making this work for me.
 
NOTE: I'm having Windows XP Professional and .Net Framework 3.5 Installed in my machine.
 
Regards,
Gnanam