There is supposedly a parentheses missing according to the compiler. All was well until I added an ICASE() function.

	SELECT ;
			d.GrpName, ;
			d.GrpID, ;
			d.Emp_ID, ;
			d.BnftName, ;
			SUM(d.bill_prem) AS Month_Billed, ;
			SUM(d.cash_paid) AS Month_Collected, ;
			ICASE(d.Bill_Mode="M", SUM((d.Bill_prem) * 12, ;
				d.Bill_Mode="Q", SUM(d.Bill_Prem) * 4, ;
				d.Bill_Mode="S", SUM(d.Bill_Prem) * 2, ;
				d.Bill_Mode="A", SUM(d.Bill_Prem), ;
				SUM(d.Bill_Prem) * 12) AS Annual_Prem, ;
			l.Lives ;
		FROM curDataDetail d;
		JOIN tmpLives l ON d.GrpID = l.GrpID ;
		WHERE BETWEEN(d.dBilling, ldFirstDateOfMonth, ldLastDateOfMonth) ;
		GROUP BY GrpName, d.GrpID, d.Emp_ID, d.BnftName, l.Lives ;
		INTO CURSOR ("tmp" + ALLTRIM(STR(lnMonth)))