Problem with TMVApplication

[Geo]

Goodmorning,

I was running a tmvapplication and although I have run it multiple times in the past, now I got the message:

Warning in TStreamerInfo::BuildCheck:
The StreamerInfo of class TAttMarker read from file /afs/cern.ch/work/g/gbillis/tops/flavourtagging/Tops_July_2017/mymarlin/smbackground_total_half2.root
has the same version (=2) as the active class but a different checksum.
You should update the version to ClassDef(TAttMarker,3).
Do not try to write objects with the current class definition,
the files will not be readable.

Warning in TStreamerInfo::CompareContent: The following data member of
the on-file layout version 2 of class ‘TAttMarker’ differs from
the in-memory layout version 2:
short fMarkerColor; //
vs
Color_t fMarkerColor; //
Warning in TStreamerInfo::CompareContent: The following data member of
the on-file layout version 2 of class ‘TAttMarker’ differs from
the in-memory layout version 2:
short fMarkerStyle; //
vs
Style_t fMarkerStyle; //
Warning in TStreamerInfo::CompareContent: The following data member of
the on-file layout version 2 of class ‘TAttMarker’ differs from
the in-memory layout version 2:
float fMarkerSize; //
vs
Size_t fMarkerSize; //
— Select signal sample

anyone has an idea??

cheers

[kialbert]

Hi,

What version of ROOT are you using now, and what version of ROOT did you run to generate the classifier?

If feasible you could regenerate your classifier with the newer ROOT version.

Perhaps @moneta or @sergei has some more input?

Cheers,
Kim

[Geo]

Hello , I am using 5.34/10 and indeed the files are from somebodyelse, but I have used them multiple times without any problem in the past.

[Axel]

There was a short time (i.e. you need an unlucky combination of ROOT versions) where this was broken. Re-generating or reading the files with a newer version (even from the same branch, e.g. v5-34 or v6-04) should fix this.

That said, you can ignore the warning.

Axel.