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VIs related to LabVIEW object-oriented programming return the following error codes. Refer to the KnowledgeBase for more information about correcting errors in LabVIEW.

Code	Description
1371	Class library could not be loaded.
1373	Class could not be loaded.
1392	LabVIEW classes do not support Revert if the library version has been bumped. There is insufficient information to undo a change to the live data in controls and indicators. To revert current changes, you must unload the class and all VIs that reference the class without saving any changes and then reload from disk.
1393	The LabVIEW class is not in memory. This dynamic subVI cannot execute. Probe the wire going into the dynamic terminal to see the data type. Then open that LabVIEW class.
1394	This dynamic subVI cannot execute because the needed member VI cannot be found. Probe the wire going into the dynamic terminal to see the data type. Then open that LabVIEW class. Open the member VI of the class that has the same name as the dynamic subVI.
1400	Attempted to read flattened data of a LabVIEW class. The flat data could not be converted to the requested type because the flat data is not the same as the requested type nor is it the same as any child class of the requested type.
1401	Attempted to read flattened data of a LabVIEW class. The version of the class currently in memory is older than the version of the data. You must find a newer version of the class to load this data.
1402	Attempted to read flattened data of a LabVIEW class. The data was written by an old version of the class and the class in memory no longer supports loading and mutating data from that older version.
1403	Attempted to read flattened data of a LabVIEW class. The data is corrupt. LabVIEW could not interpret the data as any valid flattened LabVIEW class.
1448	Bad type cast. LabVIEW cannot treat the run-time value of this LabVIEW class as an instance of the given LabVIEW class.
1486	This property or method cannot be executed on a reference that refers to a LabVIEW class loaded in a different application instance.