Missing Spine Sequence Frames? Check the Base Image Path

A folder contains every PNG, but a Spine attachment still shows a missing image. Keep playback settings unchanged first. An existing file is useful only if the sequence actually resolves its name.

Separate the base from the numbered range

The official Region attachment guide describes sequences of equally sized images with a shared, numbered path. The base image path excludes the numbers; a separate range selects them. Frame chooses the displayed image, and the sequence can be keyed.

For a regular attachment, a blank Image path falls back to its name; an explicit path takes precedence. Inspect the stored field rather than assuming a renamed label repaired the reference. These are external Spine editor concepts, not promised controls inside Tooliva.

Resolve a small naming example

Suppose a delivery uses effects/spark_01.png, spark_02.png and spark_03.png. Record effects/spark_ as the base and two-digit numbering as the agreement, then check the actual editor's range and padding. Keeping the first frame number in the base and appending another sequence number can target a different name.

This is an illustrative convention, not files tested here. Verify the real image directory, extension convention and editor version before changing an existing set.

Audit one sequence before a batch rename

1. Keep the original project and filename list; record Image path and the selected range.
2. Compare resolved names for the first, last and suspect middle frame with actual files, including case and padding.
3. Read each participating image's pixel width and height instead of comparing byte size or thumbnails.
4. Change only a confirmed reference in a project copy, then inspect the range and its animation keys.

Trace a genuinely absent number back to its export batch. A duplicated neighboring image does not restore missing content. Intentional gaps require an agreed sequence and range rather than an assumption that every player skips them.

Check ordering and time after resolving images

The separate frame filename and order checklist covers ordinary list sorting. A repaired lookup does not validate timing or the stages depicted by each frame.

Retain source resources and export batches from Spine Workbench using its guide. Have the project owner verify the actual editor and consumer. Keep an old-to-new name map before changing referenced assets.