VERIFIED SOLUTION i

Resolve unable to create a legend for a Raster image

Product affected: MapInfo Pro™
Raster files are a general category for various types of image files such as .tif, .jpg, .bmp, etc...
These are different from Vector type files which can have data associated with them in a browser/table.

Since raster files are simply different types of "pictures", there is no data associated with the image which is necessary to generate a legend.
UPDATED:  September 8, 2017