Source Error: Line 14: <uc1:head ID="head" runat="server" /> Line 15: Line 16: <body id="page1" class="<%=BodyClass%>" <%=BodyParameters%>> Line 17: error message: Value cannot be null.Parameter name: key
Use the following key in your web.config file:
<appSettings>
<add key="PageInspector:ServerCodeMappingSupport" value="Disabled" />
</appSettings>