>I am tracing the program in debug screen, and when I click on the cancel button, on debugger window title, it flashes [Run].

I'm not sure I completely understand the behavior you are describing, although from your description this sounds correct. Do you see a brief flash, but the program is still truly suspended?

>Should classes.dbf be in cdbk30\common30\libs subdirectory? My cdbk30 is in C drive and my application files are in c:\mmtest.
>Actually, I am creating the projects following 'Jump Start guide'. But I didn't see classes.dbf in application root directory. The weird thing is I didn't get this error all the time. It came up sometimes.

Actually, classes.dbf should be in cdbk30\common30\libs. You can also place an application-specific copy of classes.dbf/cdx in your application's root directory. You may want to try this as a test case. Are you sure that you are entering "DO STARTCB" to set your development path before running the application?

Classes.dbf is loaded in the DataEnvironment of the Abstract Factory. If you look at the code at the bottom of CDataEnv.prg you will see the class definition for AbstractFactoryEnvironment and the Classes Cursor.

Notice that the CursorSource for the "Classes" cursor is "FULLPATH('Classes.dbf'). Try entering the following commands in the VFP Command Window:

CD
DO STARTCB
?FULLPATH('Classes.dbf')

The FULLPATH command will return the fully qualified path of the Classes.dbf table.

Regards,

Kevin McNeish
Eight-Time .NET MVP
VFP and iOS Author, Speaker & Trainer
Oak Leaf Enterprises, Inc.
Chief Architect, MM Framework
http://www.oakleafsd.com