This article only applies to Squared Up Version 2.0. If you're looking for help with Squared Up Version 3.0, please visit our new knowledge base

This error may be due to incorrect installation or configuration of Squared Up. Check for ASP.NET errors in the Application log in the Windows Event Log.

In particular, check for the following event log:

A configuration error has occurred.

Event code: 3008 
Event message: A configuration error has occurred.
Exception information: 
    Exception type: ConfigurationErrorsException 
    Exception message: Could not load type 'System.ServiceModel.Activation.HttpModule' from assembly 'System.ServiceModel, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

If this is the case then perhaps ASP.NET 4.0 is not correctly installed. The resolution for this is described in the following article:

If this has not resolved your issue please review any configuration changes made prior to receiving this error, including windows updates / patches. It may be a recent configuration change if causing your issue, reviewing your event logs should provide further detail on this for you.

If this does not resolve your issue please contact support who can advise you further.

See also:

HTTP 500 error when clicking + to create a new dashboard

HTTP error