The panes in Webstation are empty and login happens without specifying a user or password. When specifying the URL to webstation the user is automatically logged in to webstation but there are no objects in the panes.
TAC Vista Webstation 5.1.6/7
This is caused by using the wrong application pool in Internet Information Services (IIS) manager.
Ensure that the application pool SE ASP.NET v4.0 Classic is used.
More information on how to set this and check other settings for Webstation can be found in the Lessons Learned Article #4765.