--- trunk/ascxx/simulation.cpp	2011/03/01 06:13:45	2406
+++ trunk/ascxx/simulation.cpp	2011/03/01 07:43:18	2407
@@ -913,7 +913,7 @@
 	int low;
 	int high;
 
-	if(!sys)throw runtime_error("No system built");
+	if(!sys)return;
 
 	//CONSOLE_DEBUG("Getting var status");