Warn about importing images with a size that can't be cleanly downscaled to 1x

[Justin]

If an image is imported at a scale higher than 1x, it needs to cleanly divide down to the 1x scale. When this isn't done, the image doesn't slice into animation frames properly because everything is based on the 1x scale.

Warn users about this when importing animations.

• Tags added: 4.0.3

[Justin]

A warning for this has been added in private build 10567. This will be available in public release 4.0.3.

• Status changed from New to Resolved
• Issue Assigned from (none) to Justin

[Justin]

This is still an issue for image files that are imported through drag and drop.

• Status changed from Resolved to New

[Justin]

Filed the extra case as a new issue: #1994.

• Status changed from New to Resolved

• 4.0.3