Hi Philippe, as I know you are only one acceptable from ROOT team. I found that ROOT 3.03.08 can not read the old TTree files. Immediate crash. Old ROOT can read them. When old ROOT open the file, a lot of messages about unknown classes. It is understandable, StreamerInfo objects is read, and checked, but library of classes is not loaded. When new ROOT opens the file, no any messages. Probably it can not read StreamerInfo Then it crashes after attempt to read. TBroser enough to test it. Victor Victor M. Perevoztchikov perev@bnl.gov Brookhaven National Laboratory MS 510A PO Box 5000 Upton NY 11973-5000 tel office : 631-344-7894; fax 631-344-4206; home 631-345-2690
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