Just trying to get started with  "Login" from http://www.nibble.be/?p=205  (I'm using Contour 3.0.9 and Umbraco 4.11.5)

From this line; Type = typeof(Password)

[Field("Login", "",
       Type = typeof(Password),
       Mandatory = true)]
       public string Password { get; set; }

I'm getting this error

Unable to cast object of type 'Umbraco.Forms.Core.FieldSetting.Password' to type 'Umbraco.Forms.Core.FieldType'.

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.InvalidCastException: Unable to cast object of type 'Umbraco.Forms.Core.FieldSetting.Password' to type 'Umbraco.Forms.Core.FieldType'.

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: 

[InvalidCastException: Unable to cast object of type 'Umbraco.Forms.Core.FieldSetting.Password' to type 'Umbraco.Forms.Core.FieldType'.]

   Umbraco.Forms.CodeFirst.FormManager.SynchronizeForm(Type typeForm) in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\FormBuilder\FormManager.cs:382

   Umbraco.Forms.CodeFirst.FormManager.SynchronizeForms() in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\FormBuilder\FormManager.cs:201

   Umbraco.Forms.CodeFirst.FormManager.Synchronize() in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\FormBuilder\FormManager.cs:24

   Umbraco.Forms.CodeFirst.UmbracoManager.Synchronize() in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\UmbracoManager.cs:36

   Umbraco.Forms.CodeFirst.UmbracoManager.SynchronizeIfNotSynchronized() in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\UmbracoManager.cs:21

   Umbraco.Forms.CodeFirst.ContourFormBuilderHttpModule.context_BeginRequest(Object sender, EventArgs e) in c:\Program Files (x86)\teamcity\buildAgent\work\fdc2f0fcbbcef310\Umbraco.Forms.CodeFirst\ContourFormBuilderHttpModule.cs:27

   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +80

   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +270