sorry I'm late to the party.
It would be nice to explain what you did to fix your issue, so it can help other users with the same problem.
What I understood is that you installed Wii WAD on your vWii. (really, tutorials should NEVER provide WAD files, because 1 it's illegal, 2 it's allowing people to do stupid install too easily).
But maybe I didn't understand your problem?
So, What I would have suggested is :
1. do not extract and repack the WADs from ShowmiiWads
2. do not get WADs from NUSD
both options are not generating proper WAD files.
3. if you can boot vWii system menu : do you have a Forwarder channel installed ? (if you did, you could have use it to launch a WAD installer).
That's probably how you did it, as HBC wasn't working.
4. someone would have helped you "find" the proper signed WAD files that you didn't backup yourself even if highly suggested in all hacking guides, and install these ones.
5. uninstall all Wii specific WADs : BC v6, DM, DML, Quadforce, MIOS v10
If you installed a wad you got from 1 or 2, are you sure everything is working fine ?
it could seem that everything is fine, but the WiiU could refuse to update if you are still on an older system version (though, you mentioned using WiiU homebrew, so I guess you already are on latest firmware).