FIX: "INDEX Internal Consistency Error" Occurs with SET KEY

MORE INFORMATION

Steps to Reproduce Problem

   SET MULTILOCKS ON
   USE customer ORDER cust_id
   =CURSORSETPROP('buffering',4)
   SET KEY TO RANGE "T","V"
   BROWSE
					

1. Create a new form, and place the following code in the form's Load event:

      SET MULTILOCKS ON
      SET ORDER TO cust_id
      =CURSORSETPROP('buffering',4)
      SET KEY TO RANGE "T","V"
   							

2. Add the Customer table to the Data Environment of the form.
3. Create a grid from Customer by dragging the Customer table by its title bar from the Data Environment to the form.
4. Run the form, and click one of the scroll bars of the grid, or press the up arrow to move the record pointer. At this point, the "INDEX Internal Consistency Error" appears. Pressing a key will close Visual FoxPro.

Additional Notes

• The error occurs with the Buffering property of the cursor set to 4 (Pessimistic Table Buffering) or 5 (Optimistic Table Buffering).
• Buffering settings of 1 (None), 2 (Pessimistic Row), or 3 (Optimistic Row) work correctly.
• If a SET FILTER command is used in place of the SET KEY command, no error occurs. For example, instead of using this command:

        SET KEY TO RANGE "T","V"
  							

  Use the following command to produce the same result:

        SET FILTER TO LEFT(cust_id,1)>="T" AND LEFT(cust_id,1)<="V"