Quote from BoestraI installed X-Perl today and it won't let me set my own focus like I can do with the WoW default ui. I am attaching the error code since I dont know if you want it posted in the thread.
Sorry, it cannot work, because Blizzard "fixed" it.
"Setfocus()" has been protected. No other 3rd-party addons can call it anymore, only Blizzard's default one can call it.
Please use /focus, macro or keybind instead.