Did you use ChoiDujourNX to do your firmware? It is possible that you flashed the exfat firmware and not the Fat32 firmware. You may need to reformat sd card as exfat and run ChoiDujourNX to use fat32 firmware.
Without much information to go on, that would be my guess.
Hi, The Triple Triad ds homebrew by minoru http://filetrip.net/f9350-triple-triad-%28Minoru-version%29-1-0-Final.html no longer boots as of v1.45. It does indeed work on v1.44