I have the exact same problem now. I moved a DNN3.2.2 site from one webserver to another, the original site still works fine.
The funny thing is that a newly installed instance of a new DNN3.2.2 works fine on this second server! The only difference is that the site i'm moving has Delisoft and Apollo-products installed for multilingual-support. And the original HTML/Text-module has been removed - which works fine on the original server.
When I switch the IIS on the second server between the site i'm moving and the newly installed DNN the problem only exsists on the old site... Doesn't seem to be a rights-problem. And the web.config are identical in respect to the httpHandlers.
Can anyone point me in the right direction? 