diff --git a/TraceWinCondor/submit.py b/TraceWinCondor/submit.py
index d8349795a92ed8465e5713f89117f0a6a3151374..e260737128f75fd944801ceebeba024ed13de1ee 100644
--- a/TraceWinCondor/submit.py
+++ b/TraceWinCondor/submit.py
@@ -20,6 +20,9 @@ def setup(args):
 	for folder in os.listdir(args.calc_dir):
 		if folder[0:15]=="Local_TraceWin_":
 			num_jobs+=1
+	
+	if num_jobs==0:
+		raise ValueError("Could not find any simulation folders in "+args.calc_dir)
 
 	if args.seed!=None:
 		random.seed(args.seed)