That's not a RetroPie image, but a 3rd party fork/image.
You'd have to ask the image author(s) why it's not working, it's not a standard RetroPie image that we know how to deal with.

@asianchinaboi http://lmgtfy.com/?s=d&q=retropie+forum+messagebox+contain+x+and+q

@khryss said in help error loading all of a sudden:

ok so i re partitioned and formatted and it lets me move large files onto and off of it ...

Did you fill the card to its maximum capacity? Did you compare the moved files to the originals byte by byte? Only then, you could be reasonably sure that the card is okay. That's why I recommended the tools above. Both do what I described; they fill the whole card with a test pattern and read that pattern afterwards to spot any faulty memory cells.