[luatex] Strange Ω character when using LuaTeX

[luigi scarso]

2010/7/23 Jason Stein <jason.t.stein at gmail.com>:
> I am a high school education and intermediate LaTeX user, and was intrigued
> with the possibility of using LuaTeX to help me create calendars. I
> successfully got my algorithm to work (it is attached), but for some reason
> I get an Ω character around my tikZ figures. I am using LuaTeX, Version
> beta-0.40.6-2009100310 (TeX Live 2009). Any thoughts?
> Jason T. Stein, B. Sc. (1998), B. Ed. (2002)
>
version beta-0.40.6-2009100310
is really too old

-- 
luigi