When I try to install DNN Either iusing my Web hosts package or a clean dowload i get the following error: -

My web.config file is the default all i have changed is the serpression of errors.

Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

[SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.] Telerik.Web.UI.RadUploadHttpModule.CaptureWorkerRequest(Object sender, EventArgs e) +0 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +136 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +69 

I'm wondering if your web hosting provider has installed .Net 4.5? This is the same error that I received on existing and new installs on localhost of several versions of DNN following my upgrade of Visual Studio 2012 which included the in-place install of .Net 4.5.

Depending on the code access security trust level that is configured on the hosting provider's server, you might have success changing the web.config's trust level from the default "Medium" to "Full" before retrying a fresh install.

Here's a link to my forum post on this issue: http://www.dotnetnuke.com/Resources/F...