My system is 4.3U, the VC titles were installed by WAD using a manager.You should give more information.
What region is your system?
How did you get those VC titles into it?
Were downloaded normally, were installed through wad files and a manager?
Which region those VC titles are?
How are you trying to run them, through the Wii's menu, or through a loader?
If you installed wad of games from another region on your Wii, most of the time won't work running directly from your Wii's menu. You would need something like USB Loader, select said title and go to its settings to force it run at the video format they were intended to.
I'll try moving the game to the system menu as soon as I can get on my Wii.I've never tried to run a wad-installed game from the SD card menu, so I sadly can't give you advice, but I've read that for them to work the tickets (hidden files that get installed into your system when you download a digital game), need to be on the console for them to work.
Could it be related to that?
Can you link to one?You probably need to patch IOS80 for this, I am not sure how to do that exactly, but I am sure there are tutorials out there.
I found this, although I never tried doing this so don't take my word for it.Can you link to one?