Hello Nadya:

>Can you check, if PatientDemo is used?
>
Yes it is being used.

>>>Also, may be the problem is that these cursors are somehow closed. Do you know, where do you close these cursors?

This is where the problem appears to be.

	* Select and display Long-Term Regimen 
	SELECT Regimen, StartDate, EndDate, TReference, DocName, ;
		DocNum FROM Treatment INTO CURSOR CurTreatment NOFILTER ;
	WHERE Treatment.HealthNum = mHealthNum and;
		NOT empty(Treatment.Regimen)
	
	*thisform.pageframe1.page5.ravibasegrid1.RecordSource = ""
	thisform.pageframe1.page5.ravibasegrid1.RecordSource = "CurTreatment"

	thisform.pageframe1.page5.ravibasegrid1.column1.header1.Caption = "Regimen"
	thisform.pageframe1.page5.ravibasegrid1.column1.header1.FontName = "Tahoma"
	thisform.pageframe1.page5.ravibasegrid1.column1.header1.FontSize = 8
	thisform.pageframe1.page5.ravibasegrid1.column1.Width = 250

	thisform.pageframe1.page5.ravibasegrid1.column2.header1.Caption = "Start Date"
	thisform.pageframe1.page5.ravibasegrid1.column2.header1.FontName = "Tahoma"
	thisform.pageframe1.page5.ravibasegrid1.column2.header1.FontSize = 8
	thisform.pageframe1.page5.ravibasegrid1.column2.Width = 110
	
	thisform.pageframe1.page5.ravibasegrid1.column3.header1.Caption = "End Date"
	thisform.pageframe1.page5.ravibasegrid1.column3.header1.FontName = "Tahoma"
	thisform.pageframe1.page5.ravibasegrid1.column3.header1.FontSize = 8
	thisform.pageframe1.page5.ravibasegrid1.column3.Width = 110

	mRegimen = CurTreatment.Regimen
	mStartDate = CurTreatment.StartDate
	mEndDate = CurTreatment.EndDate
	mUpdateTreatmentNumber = CurTreatment.TReference
	mDisplayDocName = CurTreatment.DocName
	mDocNum = CurTreatment.DocNum
	
	* This is to ensure that Enter Data is clicked if Treatment is blank
	IF EMPTY(mRegimen)
		thisform.pageframe1.page5.ravieditbox1.Enabled = .f.
	ELSE
		thisform.pageframe1.page5.ravieditbox1.Enabled = .t.
	ENDIF

The "Cannot access selecetd table" messge only comes after I access page4 of pageframe1. If i don;t access that page, I do not get the error message.

>I would comment out CLOSE TABLES in Destroy (you don't need it if you have AutoClose set to .t.) and see, if it makes the difference. In any case, it sounds like these cursors are already somehow closed, which should not be. Can you find out, what method closes them?

Where should I set the AutoClose Property?

Thank you Nadya for your time.