"meta": "semver": "3.0.0", "vm": "0.2.0", "agent": "Scratch 3.0"
If you have a ZIP file that was originally an .sb3 file (or contains the proper Scratch assets), follow these steps: convert zip to sb3 fix
Open your ZIP file. Ensure you see a file named project.json inside. If you don't, this isn't a Scratch project. Rename the Extension: Right-click your file and select Rename . Change the .zip at the end to .sb3 . "meta": "semver": "3
: Media files (costumes, backgrounds, sounds) often named as MD5 hashes (e.g., 83a15...svg ). The Manual "Fix" (Step-by-Step) "meta": "semver": "3.0.0"