I can’t start a new email nor replay to or forward an email in Windows Live Mail.

I was having no problems with my email on Friday, but we did updates yesterday and ever since, I can no longer compose new email, reply to nor forward an email.  Instead, I get the error box that comes up that says:  Assertion Failed:  Abort=Quit, Retry= Debug, Ignore=Continue.   Failed to initialize Shared Canvas: System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize---> System.BadImageFormatException: Could not load file or assembly 'System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies.  The module was expected to contain an assembly manifest.  File name: 'System.Xml, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' as System.Configuration.ExceptionUTil.WrapAsConfigException(String outerMessage, Exception e, String filename, Int32 line) as System.Configuration.BaseConfigurationRecord.Init(IInternalConfigRoot configRoot, BaseConfigurationRecord parent, String configPath, String locationSubPath) at System.Configuration.RuntimeConfigurationRecord.Create(InternalConfigRoot configRoot, IInternalConfigRecord parent, String configPath) at System.Configuration.Internal.InternalConfigRoot.GetConfigRecord(String configPath) as System.Configuration.ClientConfigur......<truncated>

I have deleted my email accounts, uninstalled Windows Live Essentials and then re-installed it, but it still comes up.  I'm at a loss.  Please help!