ROM Hack Error during playing BoxBoxBoy

[Marcins94]

Hi i have Luma 3ds CFW.
I installed cryptofixed .cia version of BoxBoxBoy.
I have played succesfuly through 11 chapters and every time i try to progress further the games stops and gives me this error:

An error has occured.
Hold down the POWER Button to
turn off the power, then turn it on and try again.
For help, visit support.nintendo.com.

What should I do to fix that error?

 

[Goombi]

I would suggest the following steps.
- Backing up your save with jksm
- Reinstall through freeShop
- Restore your save with jksm
I played it with freeShop, can't remember if I went that far but I never got a crash for sure.

 

[Marcins94]

Thanks for reply. I rebuild .cia from another .3ds file, installed game again and this fixed that error.