Proof crashes with some data and does not with older ones

Dear all,

I would like to link this post:

here: [url]Proof precess problem with ATLAS D3PD data
in the Proof section of roottalk; it seems that my problem is almost the same (my toy TSelector now is running after applying the suggested trickery), just checking further. anyhow, it would be useful to understand how to interpret the logs, since I could not even imagine how to solve the problem if I did not read the quoted post.
Thank you again,
federico