Is it possible to repair a broken link for a raster created using the Raster Functions menu (e.g slope, multidirectional hillshade)?
For a normal raster it's simply a matter of clicking the exclamation point and directing it to the file it's looking for, however with a raster function, it's source is the same as the raster it was created from. But if you point it to that raster you won't get the slope or hillshade you created previously, you'll just get a uniform grey mask.