Apple events error: "Object not found" (-1728)
This is one of the most frequent and generic error messages. It alerts you that an object may not have been referenced correctly.
To correct this error:
In some cases you have specified the object correctly and the "Object not found" error means that the object does not exist. For instance, if you are specifying a field on a layout check to see that the field exists and that it is on that layout. Also, when you use a Show command to find records and no records are found, the result will be "Object not found."