So, I have a 32GB SD card with plenty of memory left, around 50,000 blocks or so. With that in mind, I thought I'd be able to save a crap load of replays and for a long time it felt like that. However, after hitting around 60 replays or so, I was no longer able to save any more of them, even with plenty of room left on my SD card. I'm not sure if a thread like this is poking around on Smashboards but I thought I'd let everyone know just in case they were curious. ^_^