How to update the version ClassDef(TArrayD,2)?

Dear Experts,

I am working with Root Version 5.17/05
and it works ok for me, but now I try to run a macro and appear this warning message:

Warning in :

    The StreamerInfo of class TArrayD read from file     batch_job/HistosHQ2V0AnalysisData.root     has the same version (=1) as the active class but a different checksum.     You should update the version to ClassDef(TArrayD,2).     Do not try to write objects with the current class definition,     the files will not be readable.

and I do not know how to update this class or if I need to update all the Root version. And of course, my output file, as said the message, is not readable.May you help me please?

Cheers,

Karla Received on Fri Sep 19 2008 - 11:02:42 CEST