The object specified in the error message bounds the plate but no bounding logical connection for it exists.
Missing or corrupt root logical connection.
What You Should Do
Separately try each of the following steps:
Click View > To Do List. Select any items associated with the root logical connection. Right-click and select Update.
Manually correct other objects with errors associated with the object.
Click Recompute in the Results dialog box to recalculate the object.