Sonar Support Forums
NOTE ABOUT PERMISSIONS: Sonar requires a local or domain user account to store and retrieve performance data. Before adding the Sonar web part to a SharePoint page, verify the identity of the application pool assigned to the target web application. If not already set to a local or domain user account, change the application pool identity and insure that the user account has sufficient permissions to run SharePoint, along with read and write permissions for the “\wpresources” directory in the target web application (IIS virtual directory).