If your trying to setup or change the configuration of SharePoint on a development machines which has Office 2013 install you may encounter some strange errors relating to types such as:
Failed to call GetTypes on assembly Microsoft.Office.InfoPath.Server, Version=18.104.22.168, Culture=neutral, PublicKeyToken=71e9bce111e9429c. Could not load file or assembly ‘Microsoft.Office.InfoPath, Version=22.214.171.124, Culture=neutral, PublicKeyToken=71e9bce111e9429c’ or one of its dependencies. The system cannot find the file specified.
This is related to the way in which SharePoint is loading certain assemblies and struggles with the new assembly for InfoPath.