I, too, am having incredible trouble installing Python4Delphi. I've got all the components installed; I can see them and drop them on forms. But when I try to run the application, I always get the error message: [dcc32 Fatal Error] Unit1.pas(9): F2613 Unit 'PythonEngine' not found. The PythonEngine IS ON THE FORM! I suspect now that it's a pathing issue. What can I do to get these to run??? I REALLY need some HELP!