It does not seem that fHistoNameTitleOverWritten,fHistoNameFolderTitleOverWritten and so on are not 
initialized.

I'm afraid it is not safe
,because when ***OverWritten is "true" parameters are not supposed to be initialized.

In my case, framework tries to make a histogram whose number of bins is 1701143923.

This is my definition of the histogram. Do I need to add something?
<Histogram>
  <HistName>hXeQsum</HistName>
  <HistTitle>Qsum</HistTitle>
  <HistFolderName>Xenon</HistFolderName>
  <HistFolderTitle>Xenon</HistFolderTitle>
  <HistType>TH1F</HistType>
  <HistXNbins>4096</HistXNbins>
  <HistXmin>0</HistXmin>
  <HistXmax>5e5</HistXmax>
</Histogram>