Hi, I am working on a project experimenting with the compiler-related stuff. I had to introduce some small modifications to some classes used in the compilation process in order to complete my experiment. I wrote some test to be sure I don't any add buggy code. While doing this I noticed that if you try to compile "invalid" code programmatically instead of getting an exception you just get some messages on the Transcript. After debugging for a while, I discovered that one of the classes responsible of this behavior is *UndeclaredVariableWarning** *(defaultAction method). I have just reported an issue for this: http://code.google.com/p/pharo/issues/detail?id=2852 Regards. Saludos! Nico. blog: http://nicopaez.wordpress.com