You sure you didn't get updated to 4.3?
I've stop using my wii for about a week and all of a sudden a lot of my channels will just go return me to the system menu. Home brew isn't affected by this and neither is my system menu.
I tried to re-install the ios249, or reinstall 4.2, but I can't seem to get anything working and my knowledge isn't that big so I don't want to brick myself in the process here.
Any help is appreciated and I can show exactly what's wrong and stuff over my capture card cam if needed.
Are you trying to access channels from the system menu that are actually forwarders to a boot.dol on the sd card that is no longer present?
It is possible that even though you were at 4.2, someone took a disk update. It happens all the time here. This would have stubbed some of the ios's. If you had priiloader set-up to block this, then this is not your issue.
Are the loaders working when you launch them from homebrew channel directly.
Are the loader launching when you try to load them directly from the homebrew channel? You said they were there as part of being used by the forwarders.