Hi Guys,

I'm really stumped by this one. When navigating to the [root]/umbraco/umbraco.aspx I saw the login page. Enter the correct credentials and I ended up with a YSOD.

I rebooted the box and the issue has disapeared - I'm a touch worried about it now though.

Andyone have any ideas?

The stack trace was

Server Error in '/' Application.
--------------------------------------------------------------------------------

Object reference not set to an instance of an object.

Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not 
set to an instance of an object.

Source Error:
An unhandled exception was generated during the execution of the current web request. 
Information regarding the origin and location of the exception can be identified using the 
exception stack trace below.

Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
umbraco.BusinessLogic.Utils.TypeFinder.FindClassesOfType(Boolean useSeperateAppDomain) +56
umbraco.BusinessLogic.Actions.Action.RegisterIActions() +103
umbraco.BusinessLogic.Actions.Action..cctor() +185
[TypeInitializationException: The type initializer for 'umbraco.
BusinessLogic.Actions.Action' threw an exception.]
umbraco.cms.presentation._umbraco.RenderActionJS() +80
umbraco.cms.presentation._umbraco.Page_Load(Object sender,EventArgs e) +1326
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp,
Object o, Object t, EventArgs e) +25
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object
sender, EventArgs e) +42
System.Web.UI.Control.OnLoad(EventArgs e) +132
umbraco.BasePages.BasePage.OnLoad(EventArgs e) +21
System.Web.UI.Control.LoadRecursive() +66
System.Web.UI.Page.ProcessRequestMain(Boolean
includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
+2428
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.4200;
ASP.NET Version:2.0.50727.4016

Thanks,

Chris.