[IronPython] Installing IronPython 2.7b1 over 2.7a1

[Dino Viehland]

Tony wrote:
> Hi,
> 
> Has anyone else had any issues with this?  When I try to do it I get
> an error "A later version of IronPython 2.7 is already installed".
> However, the only version of IronPython 2.7 that is installed is alpha
> 1 ("2.7.0.1"); 2.6 ("2.6.10920.0") is also installed.  I'm using the
> msi installer from codeplex, which says it is "IronPython 2.7
> (2.7.0709)".
> 
> I presume I can fix this by uninstalling a1 and then installing b1 - I
> haven't had a chance to try that yet.
> 
> If no-one else has seen this, then I'm inclined to assume this is
> something odd with my machine.  Otherwise I can open a bug.

I saw someone w/ this issue on twitter or stackoverflow or somewhere like
that.  Uninstalling A1 and installing B1 should work.  Maybe "0709" is 
considered less than "1" due to the leading zero and we just need to be 
a little more careful in the future w/ the version numbers.