Thank you for the responses. I adjusted my .desktop file per VDVsx's recommendation.

I am using PyPackager for the packaging, so AFAICT, I am not specifying the icon location 'usr/....'. I agree that it looks like it should be '/usr/....'.

With PyPackager, I have a 'make.py' file that provides all of the inputs required for the packaging. However, nowhere that I can see am I specifying the icon directories. I simply create that directory structure below 'src'. I am a little stumped. Where would I look to see why the '/' is missing from the path?