[quote=“brun”]It looks like during the installation of ROOT you mixed 32 bit code
with 64 bit code (eg CERNLIB).
Coiuld you give more details on your setup?
Rene[/quote]
Thanks, I think I figured out the problem and it was along those lines–I was trying to use an installation of ROOT on 64 bit machines to convert hbook files created on 32 bit machines. Switching over to an installation of ROOT on the 32 bit machines cleared things up.