Hi...I was running a pharo headless in Mac OS running something like this: ./Pharo/VM/Squeak\ 4.2.5beta1U.app/Contents/MacOS/Squeak\ VM\ Opt -headless Pharo/imagenes/Pharo-1.1-11411dev10.07.1/Pharo-1.1-11411dev10.07.1.image spaceTally.st And I come to the problem that there is an error while trying to process spaceTally.st. This file is a text file that just contains "SpaceTally new printSpaceAnalysis" Now....to conclude, the problem is that according to the wonderful and nice CodeLoader (I really hate this class...I promise I will do something with it) this: 'file:spaceTally.st' asUrl retrieveContents should answer me the contents ("SpaceTally new printSpaceAnalysis") ...but instead nil is returned. The file exist. Is this wrong? is it expected? how can I fix it ? Thanks!! Mariano