I have been using athena and just installed the latest version (5.16) on a colleagues G4 powerbook running Mac OSX (10.1.4). This machine is ostensibly running the same set of basic software, namely same version of perl, Tk, python, and pgplot, but he gets a runtime error when he attempts to read in some data while I don't. It would help if there were some suggestions as to how to narrow down the problem. Upon opening a prj file (the example file, ga.prj in the examples folder), the following gibberish appears: Tk::Error: Can't call method "configure" on an undefined value at /sw/bin/athena line 1775, <R> line 9. main::set_properties at /sw/bin/athena line 1775 main::fill_skinny at /sw/bin/athena line 923 main::read_record at /sw/bin/athena line 4306 main::read_file at /sw/bin/athena line 1973 [\&main::read_file,0] Tk callback for .frame.menubutton2.menu Tk::__ANON__ at /Library/Perl/darwin/Tk.pm line 228 Tk::Menu::Invoke at /Library/Perl/darwin/Tk/Menu.pm line 530 (command bound to event) It seems to be referring to a perl module called configure. Any ideas? Thanks. Dr. Paul Fons Senior Research Scientist National Institute for Advanced Industrial Science and Technology Optoelectronics Institute Energy Electronics Institute Umezono 1-1-1 Tsukuba, Ibaraki JAPAN 305-8568 paul-fons@aist.go.jp lines below are in Japanese: 〒305-8568茨城県つくば市梅園1-1-1 主任研究官ポール・フォンス