If you're asking whether injects work on Aroma CFW, they do. For making them I personally use UWUVCI. I'm not sure about other injector scripts that people use.
I believe that you can update to the latest, just make sure that you restore update folder in case you've deleted it (in order to block updates) by using UFDiine or similar.
After that, since you're using Haxchi and, if you want to keep it around...
I think HBC crashes if you switch to USB and the drive is not FAT32 formatted.
In any case, homebrew on USB is not ideal on the Wii U. You can't use uStealth, so the Wii U will be constantly nagging you to format the drive.
what version of CIOS do you have installed?
or post a syscheck report, here for more details.
prefer an external hard drive, so that it works much better
Is your Wii Motion official Nintendo?
post a syscheck report, here to see if everything is OK.
Isn't your game corrupted (try to check with Wii Backup Manager)?
With which loader do you test your game, and is it up to date?
Have you tested it with wii backup manager your game?
if it's green ==> ok
if it is red ==> delete and redo the dump (original copy)
post a syscheck report, here to see if everything is OK.
You need cios 248 base 38 to play animal crossing city folk you can get the cios wads from modmii you might as well update all your cios to d2x v11. https://wiibrew.org/wiki/IOS38