Index: trunk/Mars/mhist/MHCamera.cc
===================================================================
--- trunk/Mars/mhist/MHCamera.cc	(revision 19831)
+++ trunk/Mars/mhist/MHCamera.cc	(revision 19832)
@@ -163,10 +163,15 @@
     rc->SetDirectory(NULL);
 
+    // It seems ROOTv6 does not properly close these two members
+    if (rc.fUsed.GetSize()==0)
+        rc->fUsed = fUsed;
+    if (rc.fBinEntries.GetSize()==0)
+        rc->fBinEntries = fBinEntries;
+
     // fGeomCam need special treatment due to its TObjArray
-    if (rc->fGeomCam && fGeomCam)
-    {
+    if (rc->fGeomCam)
         delete rc->fGeomCam;
+    if (fGeomCam)
         rc->fGeomCam = static_cast<MGeomCam*>(fGeomCam->Clone());
-    }
 
     return rc;