I'm using my own customised singin page. I customised the signin.ascx in the admin/security folder and copied this file with the local resources to the admin/skins folder. I created a new token and used this token in my skins. I'm getting a error at a each skin

Could Not Load Skin: /Portals/_default/Skins/Pius/vervolgaalderingshoek.ascx Error: Value cannot be null. Parameter name: format

Please help me

I've moved my customised files to a new folder in desktopmodules folder and restored my original signin files back to the core folder.

I don't no what you mean with namespaces, but I think you aim at this code:

@ Control language="vb" Inherits="DotNetNuke.Modules.Admin.Security.Signin" CodeFile="Signin.ascx.vb" AutoEventWireup="false" Explicit="True" %>@ Register TagPrefix="dnn" Assembly="DotNetNuke" Namespace="DotNetNuke.UI.WebControls"%>@ Register TagPrefix="dnn" TagName="Label" Src="~/controls/LabelControl.ascx" %>@ Register TagPrefix="dnn" TagName="Password" Src="~/Admin/Users/Password.ascx" %>@ Register TagPrefix="dnn" TagName="Profile" Src="~/Admin/Users/Profile.ascx" %>@ Register TagPrefix="dnn" TagName="UserSkin" Src="~/Admin/Skins/User.ascx" %>@ Register TagPrefix="dnn" TagName="LoginSkin" Src="~/Admin/Skins/Login.ascx" %>

<%

 All source files are starting with ~, so that is okay, isn't it?

I removed all old tokens at host -> modules and created a new one. I used it in all the skins. I'm getting this error again at top of my pages:

Could Not Load Skin: /Portals/_default/Skins/Pius/vervolgrijssen.ascx Error: Value cannot be null. Parameter name: format