After processing, the Diagnose & Remedy tool will automatically check for the most common known issues that users encounter. If problems are found, the button will turn red on your Project Dashboard.
The D&R tool can help identify the most common problems and help fix them, but it cannot catch everything. If something isn't right with your Project and the tool says everything is okay, try clicking the "Reindex Project" button. Communication errors during uploading and sorting can sometimes result in Project errors.
A Reindex will not undo any manual corrections you may have made. It only syncs internal data structures and completes unfinished processing stages.