We have SharePoint 2010 farm using Kerberos for authentication that works fine for almost all scenarios, except this last issue we see with PerformancePoint and the Dashboard Designer.
When our Data Connections library is empty I can start the Dashboard Designer and create a New Data Source. Clicking on Save the data source is saved in the correct location (default PPS library).
However, once I do an action that requires the Dashboard Designer to read the list of data sources from this library I get an access issue. This could be by trying to create a report using the saved data source or by closing the Dashboard Designer and opening
it again to create a data source.
This error is logged in the ULS log and Event Viewer:
The user "domain\loginname" attempted to access an item in the following location:
http://sp-server/PWA/ProjectBICenter/Data Connections for PerformancePoint