Hi list

rendering a very easy formula with greek text in it produces a pdf-document
that has not  a valid utf-8 string.

I use evince for displaying pdfs under ubuntu linux. The document appears
correctly on the screen but stops printing after a greek letter in a
formula.

The error-report says:
Internal Error: cairo context error: input string not valid UTF-8

The same document compiled in live.contextgarden.net doesn't produce a
mistake and can be printed with evince.

I can still print the document correctly using 'lpr name.pdf', so it's not
a big problem for me. But I don't know if that could be a problem for
someone else.

Test-Document:

\starttext
$3\omega$
\stoptext

Tell me, what I can do to help.

Thanks
Christian