time series buy and sell rates won't work with net metering, so add a…

…n exception for that

ssc/cmod_utilityrate5.cpp

@@ -740,6 +740,11 @@ class cm_utilityrate5 : public compute_module
 		bool two_meter = (metering_option == 4 );
 		bool timestep_reconciliation = (metering_option == 2 || metering_option == 3 || metering_option == 4);
 
+		bool time_series_rates = as_boolean("ur_en_ts_sell_rate") || as_boolean("ur_en_ts_buy_rate");
+		if (time_series_rates && !timestep_reconciliation)
+		{
+			throw exec_error("utilityrate5", "Time series rates are not compatible with net metering. Please disable time series rates or change to net billing / buy all - sell all");
+		}
 
 		idx = 0;
 		for (i=0;i<nyears;i++)