When starting Title Block Designer, before opening any title block, the following error message appears:
Internal ErrorError Message: Object reference not set to an instance of an object.TargetSite: Void UpdateGridsNodeForNewAddMode(System.String)DeclaringType: Bentley.Electrical.UI.General.ProjectOptionsAttributes: public staticMemberType: Method
The software is trying to read from the .XML file specified for Project option profile in Setup > System Paths but is failing. In one case this was due to the corruption of the specified file.
Select Setup > System Paths.
Note the path and file specified in the Project option profile field.
Use Windows Explorer to replace the specified file with a "good" file. If a backup of the file is not available, the ProjectOptions.XML file from a project folder of a project with the same or similar options may suffice.