I have a book "GISTUTORIAL1 Basic Workbook for ArcGIS 10" by W.L. Gorr & K. S. Kurland. I am working on Chapter 7 Geocoding and I am doing Tutorial 7-4 Correct street reference layer addresses =>Create an address locator for CBD Streets (on Page 248), Geocode clients' addresses to CBD Streets (on Pages 248-249), Identify a problem street segment record using Review/Remartch Addresses (on Pages 249-250), Edit a street record (on Pages 250-251), and Rebuild a street locator (on Page 251) - Step 3: right-click PghCBDStreets and click Rebuild. I got the following error: Rebuild Address Locator - Can't rebuild address locator (see the attched file). Please kindly help and tell me where I can find the root of the problem and how to solve this problem.