It is a forwarder pointing to a boot.dol? is the app on the sd card or being loaded from usb?
I think if it is a real pain in the kneck issue, you could just go to wiibrew.com and download the latest version. Replace the snes folder with the new one.
Perhaps it has updated the files and the old forwarder will no longer work, try launching it directly from the homebrew channel and see if it loads. If it does may also need to reset all the loading options to point to the directories and/or device you are using to store your roms/saves.