The Diagnose & Remedy tool serves as a proactive assistant, automatically scanning for common issues that volume photographers encounter. When the tool detects a problem, the button on your Project Dashboard will turn red, signaling the need for attention.

Communication errors during uploading and indexing can leave unfinished processing stages. The most common result is a non-working remote gallery. If something isn't right with your project and the Diagnose & Remedy says everything is okay, try clicking the "Reindex Project" button. 

A Reindex will not undo any manual corrections you may have made. It only syncs internal data structures and completes unfinished processing stages.
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If you're a ShootProof user and project thumbnails are missing, you may need to Restore Images.