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--- root:troubleshooting [2010/11/26 14:42] – decianm
+++ root:troubleshooting [2013/06/14 12:11] – nchiap
@@ Line 1: / Line 1: @@
-====== Writing Root-files ======
+====== Root-files ======
+Root-files can be the source of various problems.
+Usually they are caused by hidden changes in the internal state of ROOT.
+ROOT stores the active directory.
+When a new histograms is created,  in the active directoy, existing histograms are looked for in
 ===== Empty Files =====

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