ROM Hack ACNL - Editing protection

[Okamishu]

Hello,

First of all let me introduced myself I'm new here, so please be indulgent with me. I'm Okamishu, nice to meet you all! And then, english is not my mothertongue but I'm trying to improve it!

So I'm using Tubehax, I tried to edit my Animal Crossing card with this but now I can't play it anymore. It says that a 'problem occured' and the console restart... I don't know how to fix it and I'm scared to make things worse...

Can someone please help me?

 

[Ridge]

What exactly did you edit? Did you remember to take a backup before importing the edited save? And what method did you use to dump your save and import it again?