Just stating some obvious things:
Game Title Name:
Make sure your using "
and" and not "
&" when your naming this game prior to building? The WiiU doesn't like "
&" in the game name and you will get a
??? game icon on the WiiU Menu.
ISO:
Make sure your ISO are good dumps, below are some details for USA and EUR version of this game:
GHQE7D - The Simpsons: Hit & Run (USA)
CRC: da7ce8df
MD5: 1e40a2405da61fa5ea7f2487a99439ea
SHA1: 71648c53f19135ef006cb583628d52027df6fba8
GHQP7D - The Simpsons: Hit & Run (EUR)
CRC: fcff3d0a
MD5: f9a01088d2bac7e48af3b69f63f62174
SHA1: 0194c084858eb6b490feb034bcea9c0485808b35
You can download some free apps to find either of the CRC, MD5 or SHA1 info to check against the files you downloaded.
Are your ISO files the FULL SIZE (1.4gb) or the decompressed/shrunken ISO's (around 930MB)?
Added Info:
If your inject is the correct size and is showing the game icon on the WiiU menu, but still boots to black screen, try deleting the memory card save file on the SD CARD:
Search for these two memory save files at:
SD CARD\saves\GHQE.raw <= This is the USA version
SD CARD\saves\GHQP.raw <= This is the EUR version
Make sure you have the latest Nintendont version on your SD CARD, click
HERE to grab the latest version, scroll down to
Quick Installation.