Hacks are unloading?

[Yet Another Brony]

First off, what little information I have is very vague, so I apologize in advance. I'm currently facing a bizarre situation, often the brawl hacks are...unloaded, turned off, deactivated, in the middle of the game. It's as if the SD's been removed. Before I go into my situation, I think it's most effective to just ask:
Has this ever happened to anyone before? What are the conditions that could cause it? Can it be fixed?

What's interesting is that nothing specific really started the problem. It's been almost a year since since I've played Brawl, and I've been using the same SD for other things, like my 3DS. Back then, I didn't have this problem. As far as I know, the hacks haven't been touched in all that time. It's only now that I decided to play again that this problem started occurring. I never had any other kinds of issues with the SD. Since the hacks I had were old and disorganized anyway, I decided to wipe the slate and start anew. I re-downloaded some of the hacks I had, ditched some, and downloaded many new ones. I realize now that I should've tested Brawl every time I would add a thing, but instead, I implemented everything at once, so it's hard to track the source. I added in custom stages, characters, music, and items, and modified the CSS. I haven't edited anything else. These are the codes I have loaded:

Sorry but you are not allowed to view spoiler contents.

Any ideas on what went wrong?

[SonicBrawler]

ive had this problem several times actually. it means (or atleast ment fo rme) that the sd card was either a) breaking (ive had 3 break) or b) the lock switch is stuck near the lock. i couldnt fix this, as the lock switch ended up breaking off, locking the sd card forever. you should try and get a new sd card

[windhunter7]

I had that issue twice; the first time, it was when I was first switching to Riivo from Gecko, and I forgot to switch the hook type, as well as changing some other settings; otherwise, it would just load regular Brawl.(I assume this is what you're talking about?)

The second time was when my Wii ended up having a broken disc drive, and so I had to fix it.(It kept saying Brawl Disc Not Found when trying to load hacks, and when I tried regular Brawl, it ended up saying the same thing, and it also gave a disc error for any disc; I don't think this was your problem, but I guess it could have been)

[Yet Another Brony]

Thanks, so it's likely an SD problem and not a hack problem? I'll have to try to find another to test. What's the highest amount of gigs an SD can have that still works for Brawl hacks? I actually do have an 8 gig SD but that won't work for Brawl.

[windhunter7]

Ordinarily 2 gigs, but I believe there's some sort of code that can enable using SD cards beyond that amount.

[Yet Another Brony]

It probably is an SD problem. In mid-battle, the song (Zinnia's theme) reverted to it's original theme (Battlefield). Then it switched back to Zinnia's theme, then back to Battlefield at random intervals. T'was pretty freaky. While I'm looking for another 2gig SD, I'd love to learn more about the possibility of higher ones being usable. I heard Riivolution can do that, but I don't have a physical copy of Brawl. (the whole reason I hacked my Wii is 'cause the disk drive stopped working.) It's strange though, I never had a problem with this SD on anything else I used it for. The lock thingie in firm and always unlocked, and it still isn't giving me problems on anything but Brawl.

[Yet Another Brony]

I managed to test some things with the help of my friends. My Wii can't read disks, so I just now downloaded Riivolution to use on my friend's Wii. Since my hacks are in folders, I borrowed another friend's hacks via his ssbb folder. Using my SD, one friend's Riivolution and hacks, and andother friend's Wii, we successfully played Brawl with hacks without amy problems. I suspect it may have to do with the way Riivolution loads hacks, I'd use it if I could. Then I tranferred my hacks to my friend's SD and used USB Loader like I usually do. For some reason, the game would always freeze when we tried to pick a stage, so no battles took place. Could it be a problem with my hacks, or a difference in SD format? Putting everything back to normal, my friend's hacks work as they always did on his SD and our other friend's Wii, while my hacks worked on my Wii, but still unloaded themselves eventually. Where could the problem truly lie? I'd need to get a new SD of my own to know for sure.