Mixed ASP.MVC 3 and Webforms app routing problems on IIS 5.1

I've got mixed ASP.MVC3/Webform app and I've got problem with deploy on IIS 5.1. I followed this http://itscommonsensestupid.blogspot.com/2008/11/deploy-aspnet-mvc-app-on-windows-xp-iis.html example and it's working fine for MVC part. Problem is, that Webform page(I need webform for ReportViewer component) cannot be found. Everything is OK in development enviroment (I simply Redirect to "/Report/ReportList.a开发者_如何学Gospx") but not in IIS.

Edit: So I've found solution by myself. I had Return Redirect "/Report/ReportList.aspx"; but when I change it to return Redirect(Url.Content("~/Report/ReportList.aspx")); then it works.

---

So xxviktor found solution by himself. He had

Return Redirect "/Report/ReportList.aspx"; 

but when he changed it to

return Redirect(Url.Content("~/Report/ReportList.aspx"));

then it works.

Answered as community wiki based on this hint.