I am getting the above error when I hover over the:
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="Default" Title="Caller" %>
on the apsx page.
Basically the original project was just 1 .vb file (default.aspx.vb) that contained hundreds of lines of script. To make it more manageable I split out the similar functions into two .vb files and created namespaces for them. I then added the two namespaces to the web.config file.
I thought that this is all I would need to do, but I am still getting the error above.
I can't add them as a reference as they are not compiled dlls. Normally a website has an app_code directory which holds this, but as this is a project, I don't appear to have one, nor is there an option to add under add > add asp.net folder.