For whatever reason I don't have that directory. I ran this version instead: https://raw.github.com/plt/racket/master/collects/sgl/examples/gears.rkt
That worked fine, rotating the gears as expected and printing this to the console: RENDERER: Mesa DRI Intel(R) 945GM x86/MMX/SSE2 VERSION: 1.4 Mesa 8.0.2 VENDOR: Tungsten Graphics, Inc EXTENSIONS: ... If it helps, I'm using Ubuntu 12.04 which either didn't have Racket or at least not a newer version, so I'm installing from this PPA: deb http://ppa.launchpad.net/plt/racket/ubuntu precise main On Thu, May 17, 2012 at 4:58 PM, Michael Wilber <mwil...@uccs.edu> wrote: > Can you run other OpenGL Racket programs? For example, try the gears example: > > racket /usr/lib/racket/collects/sgl/examples/gears.rkt > > On Thu, 17 May 2012 17:49:21 -0400, JP Verkamp <rac...@jverkamp.com> wrote: >> Hopefully someone out there can help me out, I've run into a a bit of >> a problem with the gl2d and gl-world packages from PLaneT. I've got a >> relatively small sample and whenever I run the code (even after >> commenting out all of the OpenGL specific code other than the big-bang >> call), I always get this error: >> >> send: target is not an object: #f for method: call-as-current >> >> The one relevant response I've found thus far on the subject is from >> Matthew Flatt from last December on the mailing list ( >> http://lists.racket-lang.org/users/archive/2011-October/048813.html ) >> which says to check "Do you have "libgdkglext-x11-1.0" and >> "libgtkglext-x11-1.0" installed?", which I do. There's a .so for each >> in my /usr/lib directory. After that though, I'm not sure where to go. >> Is there perhaps some way to check which libraries that Racket is >> trying to load / what else might be causing the error? >> >> Thanks, >> JP >> ____________________ >> Racket Users list: >> http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users