Definitely an official card if that's where you got it (or a local store usually doesnt carry fakes either), so that shouldn't be a problem.
I guess in all likelihood it could just be the games have bad files in their (the games) meta folders. I'm not sure where you got them, or if you copied your own. You can PM me about that if you want, but otherwise, I'd go with a format if it keeps happening and the files are good.
Here is the latest official nightly build from github if you want to try replacing loadiine's elf though. Also ignore the www dir unless you need it for your self hosting.
https://github.com/dimok789/loadiin...iine-nightly-b80ba75/loadiine_gx2_b80ba75.zip
What firmware is your U on? 5.3.2, 5.5.1?