Index: trunk/MagicSoft/Mars/manalysis/MExtractSignal2.cc
===================================================================
--- trunk/MagicSoft/Mars/manalysis/MExtractSignal2.cc	(revision 3016)
+++ trunk/MagicSoft/Mars/manalysis/MExtractSignal2.cc	(revision 3018)
@@ -85,7 +85,11 @@
     fLoGainFirst = first;
 
-    fWindow = window;
-
+    fWindow     = window & ~1;
     fWindowSqrt = TMath::Sqrt((Float_t)fWindow);
+
+    if (fWindow==window)
+        return;
+
+    *fLog << warn << "MExtractSignal2::SetRange - Window size set to even " << fWindow << endl;
 }