On Tue, Mar 22, 2011 at 7:33 AM, Doug Blank <doug.blank at gmail.com> wrote: > Is that you need Mono 2.8 to build IronPython, or to run it? > IronPython2.6 beta 2 is running fine under Mono 2.6.7. IronPython 2.7 requires .NET 4 (to build and run). Mono 2.10 is probably your best bet. - Jeff