For the record, I can't find any reason why the magic words wouldn't work from the GUI. When I set a forwarder channel, it works in the GUI, game list and menus. Thus, I have no clue why Magic Words wouldn't work as they use the same function, essentially. Could those that were having the problem or even others just using Priiloader autoboot please try the following:
First, ensure you are using v55a, v55a-fat or v55a2x of the loader and v68+ of Priiloader (links to these are in the last few pages), then:
Add:
to the very end of config.txt. Don't bother with changing the rest of your config.txt file, just put those at the end, even if they were set to a different value earlier.
Now, start Cfg and go to the global options menu (1 twice). Check the info it prints out to make sure you don't have an additional config.txt file (if you do have one, add the above lines to that file too).
Now, please check what happens when you push either Home in the GUI, console game listing and any other menu (e.g. options) and what happens when you push 2 in the Gui and game listing (do not check the other menus for 2). Please report in this thread which buttons in which locations send you to the Wii Menu and which don't.