A Raster image has been attached through Raster Manager but it does not display.
Make sure that in Raster Manager the View in which Raster image is not displayed, is toggled:
Go into Workspace > Preference > Raster Manager > Memory change it from Automatic to Standard.
When attaching a Raster file, a cache file is created. When the cache file gets corrupted it is not possible to view the Raster file.
Open the Raster Manager>Settings>Cache Manager
In Cache Manager check the path in which the cache files folder is located. Check manually for the cache file related to the raster file and remove it. Alternatively you can set one of the other Options underneath “Cache Files”
Raster Caching when image is only displaying the outline