When Project Manager is opened, a big red X appears over the folder tree pane, and an error message is displayed.
Project ManagerUnhandled exception has occurred in a component in your application. If you click Continue, the application will ignore this error and attempt to continue.
Index was outside the bounds of the array
Object reference not set to an instance of an object.
Pages in the currently selected project can be accessed, but no other projects can be selected.
If the Reset button does not help or is not available, do the following.
Close Promis.e or Bentley Substation.
Delete or rename the following folder Application Data (per-user configuration) - Promis.eApplication Data (per-user configuration) - Substation
Keywords: System.NullReferenceException: Object reference not set to an instance of an object. at DevExpress.XtraBars.Docking.Paint.HideBarPainter.DrawHideBarControlButtonContent