Hi Andrea,

According to Wolfgang Schuster and some others removing the file Skia.ttf may solve the problem. 
Please read the thread

	http://www.ntg.nl/pipermail/ntg-context/2013/075689.html

and more precisely

	http://www.ntg.nl/pipermail/ntg-context/2013/075701.html

Best regards: OK

On 19 nov. 2013, at 00:59, Andrea Valle <valle@di.unito.it> wrote:

> Dear,
> 
> long time since I have posted to the list but still a dedicated ConTeXt user…
> 
> Now, I’ve upgraded to Mavericks. No way to use ConTeXt.
> I’ve also installed texlive 2013 and I installed the available updates.
> But still my ConTeXt is broken (I’m typesetting from TeXShop via GUI menu).
> I always get this:
> 
> /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': /usr/local/texlive/2013/texmf-dist/scripts/context/ruby/base/switch.rb:501: invalid multibyte escape: /\xFF/ (SyntaxError)
> 	from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
> 	from /usr/local/texlive/2013/texmf-dist/scripts/context/ruby/texexec.rb:11:in `<main>’
> 
> I can understand it has something to do with ruby but nothing else.
> 
> ?
> 
> Many thanks 
> 
> Best
> -a-
> 
> 
> --------------------------------------------------
> Andrea Valle
> --------------------------------------------------
> CIRMA - StudiUm
> Università degli Studi di Torino
> --> http://www.cirma.unito.it/andrea/
> --> http://www.fonurgia.unito.it/andrea/
> --> http://www.flickr.com/photos/vanderaalle/sets/
> --> http://vimeo.com/vanderaalle
> -->  http://www.youtube.com/user/vanderaalle
> --> andrea.valle@unito.it
> --------------------------------------------------
> 
> "This is a very complicated case, Maude. You know, a lotta ins, a lotta outs, a lotta what-have-yous." 
> (Jeffrey 'The Dude' Lebowski)
> 
> 
> 
> --------------------------------------------------
> Andrea Valle
> --------------------------------------------------
> CIRMA - StudiUm
> Università degli Studi di Torino
> --> http://www.cirma.unito.it/andrea/
> --> http://www.fonurgia.unito.it/andrea/
> --> http://www.flickr.com/photos/vanderaalle/sets/
> --> http://vimeo.com/vanderaalle
> -->  http://www.youtube.com/user/vanderaalle
> --> andrea.valle@unito.it
> --------------------------------------------------
> 
> "This is a very complicated case, Maude. You know, a lotta ins, a lotta outs, a lotta what-have-yous." 
> (Jeffrey 'The Dude' Lebowski)
> 
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