I am currently installing an episerver site that I know works, however when after I have installed it I get an exception when trying to login to the site.
2013-10-04 09:19:22,771 ERROR [8] EPiServer.Global.Global_Error - 1.2.5 Unhandled exception in ASP.NET System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.ArgumentException: GpnRapport.Presenters.PageHeaderPresenter is missing an expected constructor, or the constructor is not accessible. We tried to execute code equivalent to: new GpnRapport.Presenters.PageHeaderPresenter(ASP.templates_units_pageheader_ascx view). Add a public constructor with a compatible signature, or set PresenterBinder.Factory to an implementation that can supply constructor dependencies.
I cannot see any reason to edit the code, seeing that it works for other people. All I can think of is that this must be en error with episerver config. Any ideas?
It looks like you are using the WebForms MVP framework, and as the stack trace suggests, when trying to create an instance of PageHeaderPresenter, the presenter factory cannot find a suitable constructor to create one.
If your using the DefaultPresenterFactory, your presenter needs to have a constructor that accepts a single parameter of a type that implements IView, so you need to make sure your pageheader.ascx code behind class implements IView or that it's derived from a type that implements IView.