Hello Comunity,

we have an problem with that behavior: 

We installed HotCakes Commerce in the Latest version and DNN 07.04.00.

If we press the Checkout via PayPal we´ll get that Error and the Customer gets redirected to the page where the button was pressed.: 

AbsoluteURL:/Default.aspx

DefaultDataProvider:DotNetNuke.Data.SqlDataProvider, DotNetNuke

ExceptionGUID:10133d6a-2037-4a25-a49c-92c13058c9ca

AssemblyVersion:

PortalId:-1

UserId:-1

TabId:-1

RawUrl:

Referrer:

UserAgent:

ExceptionHash:DBbfhfHoplQ4U7aQJe2T+Q==

Message:Der Server kann den Header nicht anhängen, nachdem HTTP-Header gesendet wurden.

StackTrace:

InnerMessage:Der Server kann den Header nicht anhängen, nachdem HTTP-Header gesendet wurden.

InnerStackTrace:

   bei System.Web.HttpResponse.AppendHeader(String name, String value)    bei DotNetNuke.Framework.DefaultPage.OnPreRender(EventArgs evt)    bei System.Web.UI.Control.PreRenderRecursiveInternal()    bei System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Source:

FileName:

FileLineNumber:0

FileColumnNumber:0

Method:

Server-Name: devcms01

I´ve also contected the Hotcakes Commerce Comunity.

Best Regards Björn Bartelt from inch-media