A number of people have reported the problem with EditEntry.ascx - part of the blog module, you can't add a new blog entry - the problem is covered here

http://www.dotnetnuke.com/Community/Forums/tabid/795/forumid/92/threadid/148579/threadpage/1/scope/posts/Default.aspx, my environment is DNN 4.05.03 with the newest Blog module. So this problem is easy to recreate if you have the latest release code.

DNN fails when trying to load the component, the exception was thrown by

objPortalModuleBase = CType(Me.LoadControl("~/" & objModule.ControlSrc), PortalModuleBase)

 line 456 deep down in Library\Components\Skins\Skin.vb. The problem that I have is how to find the underlying issue - it's clear that the control won't load, it appears to compile ok, so there's was an issue with the .ascx somewhere. Does anyone know how to find out where in the ascx code a problem might lie, my approach was to try to recreate the issue by creating a new empty control, and then copying code over until it failed - that was not only laborious it didn't work in practise as there doesn't appear to be a control tester. That is a clean way of loading a control into a test page to see if it works.

What do others do ?

The question I was asking is 'how do you debug a DNN module ?', I know this problem has been found and fixed, but other than sifting every line of code by hand, there must be a better way, read the original post for what I tried - like I said, How do other people debug their DNN modules ?