Bill Baer /bɛːr/

So you downloaded the ULS Viewer and fired up on your SharePoint 2010 environment only to see something like this? -— System.TypeInitializationException: The type initializer for ‘UlsGump.AboutForm’ threw an exception. —> System.TypeLoadException: Could not load type ‘System.Reflection.CustomAttributeExtensions’ from assembly ‘mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089’. at UlsGump.AboutForm..cctor() — End of inner exception stack trace — at UlsGump.MainForm.MainForm_Load(Object sender, EventArgs e) at System.Windows.Forms.Form.OnLoad(EventArgs e) at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible) at System.Windows.Forms.Control.CreateControl() at System.Windows.Forms.Control.WmShowWindow(Message& m) at System.

I’m excited to announce we’ve published a new and improved version of the ULS Viewer. About the Unified Logging Service The Unified Logging Service (ULS) is the primary logging mechanism in SharePoint to make it easier to develop applications, expose in-depth information for debugging, and vehicle to isolate problems or threshold issues when they are encountered. ULS writes events to the Trace Log and stores them in the file system.