Hi,
There are typos on the ‘getting the source’ part of the ‘installing root’ web page
http://root.cern.ch/drupal/content/installing-root-source:
The source file name should be root[color=red]_[/color].source.tar.gz
instead of root[color=red]-[/color].source.tar.gz (note: underscore instead of dash)
Zhiyi.