Actually, I just noticed I get it on Windows too, but I get three tabs and Wx::Locale works properly. The full Windows message is:
17:34:12: Warning: Skipping module 'Wx::DemoModules::wxHVScrolledWindow' 17:34:12: Warning: Base class package "Wx::PlHVScrolledWindow" is empty. 17:34:12: Warning: (Perhaps you need to 'use' the module which defines that package first.) 17:34:12: Warning: at C:/Perl/site/lib/Wx/DemoModules/wxHVScrolledWindow.pm line 19 17:34:12: Warning: BEGIN failed--compilation aborted at C:/Perl/site/lib/Wx/DemoModules/wxHVScrolledWindow.pm line 19. 17:34:12: Warning: Compilation failed in require at C:/Perl/site/lib/Wx/Demo.pm line 498. 17:34:21: Welcome to wxPerl! Regards Steve