From Wojciech Lewandowski, "ref_ptr usage changes made on 9th of June broke VirtualProgram used in osgShaderCompositor example. Taking the opportunity I modified the code a little to use earth sphere as default model. Cow.osg used previously was not looking good in advanced example. I also changed default to advanced example, because its more informative with labels describing virtual programs used to render the objects."

examples/osgshadercompositor/VirtualProgram.cpp

@@ -68,7 +68,7 @@ osg::Shader * VirtualProgram::setShader
        shaderCurrent = shaderNew;
     }
 
-    return shaderCurrent.release();
+    return shaderCurrent.get();
 }
 ////////////////////////////////////////////////////////////////////////////////
 void VirtualProgram::apply( osg::State & state ) const