Hi, I'm sorry to bother you again :( 1) I can launch EStudio ONLY from the MacOS Terminal window using 'ec -gui' command and this starts the EStudio window. Then I press the 'Add Project' button, I browse to 'simple.ecf' file (with the 'compile' option and open it. It is compiled with no errors. When I try to RUN the project, it appears a warning popup panel saying "You must compile a project first". Now I'm stuck again. Please see the attached screen image. 2) There is no EStudio app in /Applications/MacPorts folder and I can't find any Eiffel .app file in my system, so I can't launch the EStudio application as a normal app. Any idea or solution? Thank you very much. Best regards Alberto Buffetti