In order to resolve this error you need to delete the related records from SysLastValue table. You cannot find this table in AOT so go to SysLastValue form, open data source node, right click and browse table data.
Filter the table with the UserId who is facing the above error, the ElementName with the related element in error and the related company name.
Delete that particular record by Alt+F9 and restart the client.
You can take the backup of the SysLastValue table if you are performing the above actions in production environment.
Note : This table contains the usage data and deleting the records unnecessarily can reset the user saved settings.