I am having trouble getting NBOpenGL to work. I started with the Pharo 3.0 image from (http://pharo.org/download) and registered/configured NBOpenGL from http://smalltalkhub.com/#!/~PharoExtras/NBOpenGL (ConfigurationOfNBOpenGL-RonieSalgado.18.mcz). The instructions there are a little confusing since they say: In Pharo 2.0, current configuration should be loaded: (ConfigurationOfNBOpenGL project version: '3.0') load. But it seems meant for Pharo 3.0 and the latest configuration is version 3.1. Anyway, after loading version 3.0 on my Mac I can run the GLTTRenderingDemo (yay!). Wanting more I load NBOpenGL-Extra-jeanbaptistearnaud.3.mcz but the NBOpenGL-Extra Demos don't work for me. For example, GLDemo01EmptyWindow opens a red window with a trace indicating that NBMSAAOffscreenDisplay(Object)>>doesNotUnderstand: #makeCurrent. If I comment out the render method's "(Smalltalk platform isMacOSX)" test then it works and displays a colored window. Moving on to GLDemo02RedTriangle I get "MessageNotUnderstood: receiver of "on:" is nil" from the render method statement "program := NBGLProgram on: display gl.". NBGLProgram doesn't seem to exist in NBOpenGL version 3.0 so I load version 3.1. NBGLProgram exists there but now GLTTRenderingDemo doesn't work any more ("MessageNotUnderstood: AnObsoleteNBGLFragmentProgram class>>on:") nor does the new GLTutorial1 ("Error during FFI call: nil" from shaderSource_shader:count:string:length:). GLDemo01EmptyWindow (with isMacOSX test commented out) still works but GLDemo02RedTriangle fails with MessageNotUnderstood: NBGLProgram class>>on: Advice? Thanks. -- View this message in context: http://forum.world.st/3D-with-Pharo-and-OpenGL-tp4760029p4760343.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.