This week I inherited a departments DotNetNuke installation, which was at version 04.06.02.  I've spent the past two days creating a test server, creating a copy of the installation on the test server and getting it to run at the present version.  Today I've upgraded the DNN install from 04.06.02 -> 04.05.05 -> 05.05.01 -> 05.06.02 -> 05.06.04 -> 06.01.03 successfully.  Everything appears to be working on this newer version. 

Next I upgraded 06.01.03 -> 06.01.04 and after the upgrade completed successfully the page now loads without any stylesheets or javascript.  Not seeing anything in the readme about this problem I decided to go 06.01.04 -> 06.01.05 to get to the latest version and see if this resolves the issue.  It doesn't appear to, the page still loads without a stylesheet or javascript.

When I browse to the home page IE gives me two errors:

Message: 'jQuery' is undefined
Line: 6
Char: 9
Code: 0
URI: http://phd.msu.edu/Resources/Shared/scripts/initWidgets.js

Message: Object expected
Line: 195
Char: 9
Code: 0
URI: http://phd.msu.edu/

I changed the theme/skin to the default theme/skin and the same problem occurs, so I believe this isn't related to the particular theme we're using.  In another site I created in IIS 7.5 I was able to do a brand new installation of 06.01.05 and the theme/skin is loaded and present.  I compared the script and stylesheet files between the two installations and they look identical.  

I'm looking for suggestions on why this site may have stopped loading the stylesheet and javascript.

  

Cathal,

Thanks for the response. It turns out there were a number of huge code sections that were removed from the web.config related to the client and replacing these from a 6.1.3 web.config resolved the problem.