First post now contains a new update with some minor bug fixing: eggs and empty boxes shows correctly on the screen, font is not glitched anymore.
I added an export functionality and now the import functionality is really user friendly. Place every .pk6 file you desire into the /PCHex++/import folder on your sd (this folder is also automatically generated at first startup) press Y on the desired location and choose your file!
Thanks A LOT to some guinea pigs who are patient enough to test this for me as i don't always have access to a real 3ds. A little screenshot with the new import function:
Thanks to
@Hayleia for the graphical help!
The XY red screen bug turned out to be more subtle than i thought. This one will be fixed in the next update