Hi, I'm trying to use cl-opengl. I cannot run any of the examples. For instance, when I run rb-cube with Allegro 8.2 I get the following error: Attempt to call #("glutCloseFunc" 3074974352 0 2 3074974352 4) for which the definition has not yet been (or is no longer) loaded. [Condition of type SIMPLE-ERROR] I have also tried with the latest version of SBCL and I get the following error: GLUT: Warning in (unamed): invalid glutGet parameter: 124 debugger invoked on a SB-KERNEL::UNDEFINED-ALIEN-FUNCTION-ERROR in thread #<THREAD "initial thread" RUNNING {A9F37B1}>: Attempt to call an undefined alien function. Can you help me? José