Index: trunk/MagicSoft/Mars/mjobs/MSequence.cc
===================================================================
--- trunk/MagicSoft/Mars/mjobs/MSequence.cc	(revision 8245)
+++ trunk/MagicSoft/Mars/mjobs/MSequence.cc	(revision 8247)
@@ -412,5 +412,5 @@
 
     const Bool_t rc1 = gSystem->AccessPathName(fName, kFileExists);
-    const Bool_t rc2 = gSystem->AccessPathName(fTitle, kFileExists);
+    const Bool_t rc2 = !fTitle.IsNull() && gSystem->AccessPathName(fTitle, kFileExists);
 
     if (rc1)