WPF4 Partial Thrust, permission error

Question

Hi All,

I've just created a WPF 4 application.

Then I go to the security tab in the properties, and set enable click once security, set it to Partial Thrust and set the zone to Internet.

But when I run the application I get this error:

Request for the permission of type 'System.Security.Permissions.UIPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

The problem is that Google doesn't help at ALL.

Nobody has this problem with WPF apps...

The error occurs when I set it to Partial Trust and Full Trust...