NOW the installer should work.
// UK lang variables
tinyMCE.addToLang('devkit',{
title : 'TinyMCE Development Kit',
info_tab : 'Info',
settings_tab : 'Settings',
log_tab : 'Log',
content_tab : 'Content',
command_states_tab : 'Commands',
undo_redo_tab : 'Undo/Redo',
misc_tab : 'Misc',
filter : 'Filter:',
clear_log : 'Clear log',
refresh : 'Refresh',
info_help : 'Press Refresh to view info.',
settings_help : 'Press Refresh to display the settings array for each TinyMCE_Control instance.',
content_help : 'Press Refresh to display the raw and cleaned HTML content for each TinyMCE_Control instance.',
command_states_help : 'Press Refresh to display the current command states from inst.queryCommandState. This list will also mark unsupported commands.',
undo_redo_help : 'Press Refresh to display the global and instance undo/redo levels.',
misc_help : 'Here are various tools for debugging and development purposes.',
debug_events : 'Debug events',
undo_diff : 'Diff undo levels'
});