I tried to load Kitsu's BrawlEx V4.16 and it loaded normal Brawl even though I set the Hook type to AXNextFrame on Gecko and basically put Kitsu's BrawlEx in the root of my SD card. Then I tried to load JOJI's BrawlEx Extended Edition V2 by putting all of the Core Files from the default RSBE.Version download folder into the private -> wii -> app -> RSBE -> pf folder like I've seen with other builds, but it still loaded normal Brawl. This was all on my Wii by the way. How exactly do you set up JOJI's BrawlEx Extended Edition V2 so that it loads? Are you supposed to use Gecko or something else?
If you're using a real Wii, try Project M's launcher to launch it.
I tried Project M's launcher and it worked. It currently doesn't say that on JOJI's website so I don't know how JOJI makes his build work. Anyway, thank you Ebola16!
Yeah if I remember correctly the SDHC code doesn't work with Gecko OS on real Wiis. Using USB Loader GX's codehandler or Project M's launcher will work.