Tiny wii backup manager won't convert large files like it used to
So i wanted to download new games so i picked up lego stars which is like 2 gigs or a very big 1 gig. I had 2.11 gigs avail in my sd card so it was fine in theory. But, it didn't convert and said convertion failed and missing 1000 or smth blocs. Like how are blocs missing when there is litterally 2.11 gigs free in my sd card?????. And i have sooo many large games in my sd like i doesn't make any sense. Pls some help?