diff -ur atomicparsley-0.9.0/AtomicParsley.cpp atomicparsley-0.9.0-working/AtomicParsley.cpp
--- atomicparsley-0.9.0/AtomicParsley.cpp	2009-04-09 19:32:27.000000000 -0400
+++ atomicparsley-0.9.0-working/AtomicParsley.cpp	2009-04-09 19:33:16.000000000 -0400
@@ -2071,6 +2071,10 @@
 	}
 			
 	atom_number++; //increment to the next AtomicInfo array
+	if (atom_number > MAX_ATOMS) {
+		fprintf(stderr, "AtomicParsley error: amount of atoms exceeds internal limit. Aborting.\n");
+		exit(1);
+	}
 	
 	return;
 }