Problem with Add field and calculate field

Discussion created by monsieuralif on May 2, 2010
Latest reply on May 13, 2010 by monsieuralif
I'm writing a python script that needs to create a polygon feature class which has add to it a "A" field from its input. But, when i run the script, this message appear "<type 'exceptions.RuntimeError'>: ERROR 999999: Error executing function. A locator with this name does not exist. Failed to execute (script)."
I'm using ArcGis 9.3. Anybody knows if there is a problem with the script? what the message means?