This means that OpenGL on your system is not working correctly. I presume that you are on Linux. You should consult this page to make sure you have the correct libraries installed:<div><br></div><div><a href="http://docs.racket-lang.org/gui/libs.html">http://docs.racket-lang.org/gui/libs.html</a></div> <div><br></div><div>Jay<br><br><div class="gmail_quote">On Mon, Dec 12, 2011 at 11:41 AM, C.S.I. <span dir="ltr"><<a href="mailto:neokrept@gmail.com">neokrept@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> Hello all,<br> <br> I tried to run Mccarthy's pyramidstack 1.0 and I get this error:<br> "send: target is not an object: #f for method: call-as-current".<br> I think it has something to do with the big-bang procedure, or with<br> the opengl libs, but I followed every advice I found without success.<br> <br> Thanks in advance,<br> C.S.<br> _________________________________________________<br> For list-related administrative tasks:<br> <a href="http://lists.racket-lang.org/listinfo/users" target="_blank">http://lists.racket-lang.org/listinfo/users</a><br> </blockquote></div><br><br clear="all"><div><br></div>-- <br>Jay McCarthy <<a href="mailto:jay@cs.byu.edu" target="_blank">jay@cs.byu.edu</a>><br>Assistant Professor / Brigham Young University<br><a href="http://faculty.cs.byu.edu/~jay" target="_blank">http://faculty.cs.byu.edu/~jay</a><br> <br>"The glory of God is Intelligence" - D&C 93<br> </div>