I'm having a ARM11 error on my 3ds. So, I followed the site instructions to use PKHeX and Homebrew. It's working fine with my pokemon Ultra Moon (downloaded software) but when I try to open my Omega Ruby (physical copy) I get a ARM11 crash. I already tried to use a backup save and even deleting the entire save, but nothing seems to work. I have some crash dump files if needed. Also, I tested the game on my brother's 3ds (no custom firmware) and it works just fine.
crash_dump_00000000.dmp