When an asset will not import, test the file itself first, then its size and transparency, and finally the device permission and memory state.
Last reviewed September 17, 2026 · Verify steps in your current app version
Check in this order
Change one variable at a time so you know what fixed the problem.
Open the file in another image viewer to rule out corruption.
Export a fresh PNG copy from the prep tool.
Try a smaller pixel size without enlarging the source.
Confirm the app can access photos or files.
Close other apps, reopen MiniMuse and retry one file.
1Open the file
2Export fresh PNG
3Retry one image
Change one variable at a time so you can identify the cause.
Still blocked
Record the device, app version, step and visible error. Do not attach private artwork to a public report unless you intend to share it.
Create, repair and combine locally
Upload your artwork to clean an edge, select a region or combine it with other pieces. Download a single PNG whenever it is ready, or keep building the complete picture.