"Operator Room", "Feedbacks", "Logs", and "Debug" do not show up.   <-- you have 2 options:

first: change the settings in the database
second: set your database back with the 2 sql-files which you can find in the install-pack.

System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.mshtml, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
File name: 'Microsoft.mshtml, Version=7.0.3300.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'

what version of Internet-Explorer do you have installed?