Mario Craft, the DS homebrew Mario level editor, has been updated to version 1.3.
From the developer:
"The last update Could have been good but Had a couple of errors. SEVERAL bug fixes. No jumpy camera movement there, it now moves Smoothly When You Reach has some height. Offset blocks on Both Have Been axis fixed now for perfect placement. After Dying and then falling to the ground and getting stuck has-been fixed. Moving objects past 256x192 aussi HAS-been fixed. Room Has No height limit now for No Reason. All help still made Enhance Other Areas as well. Keep the feedback coming and i can fix These Things again and add more stuff!"