Something is still bothering me still.
Use Copy Raster and save both files to a new folder (short, no spaces, no fluff, like "C:\work")
Make sure that you specify a *.tif output, not an esri raster or any other format,
Make sure that you specify the cell size, snap raster and extent to be that of you cats layer.
Then do the work. If all else fails, you can zip and attach that folder with the two tif files. so we can have a look if needed
... sort of retired...