Depending on what region NSM you got i.e. PAL or NTSC and the type of Wii you have i.e. Euro, USA, JP, or other regions. make sure you download the correct region game otherwise Neogamma is your best bet as you can force NTSC or PAL480p.
If you are like me and prefer things to run pretty as how developers intended, then you will probably benefit from installing the other IOS's found on download for USBLoader. Just run Hermes and install 222, and the others. I was having issues with the long 002 error, and black screen only from USBLoader app, but not from neogamma. So i recommend you try that out and see what works for you.
I have to admit the HD is the best addition to the wii. cheers and good luck