I saw some advice that said to try using shareport on different computers. As I have stated I have not been able to use Shareport on 3 different computers, different hardware and different operating systems. I did make Shareport work on all 3 computers for a short period of time only by powering down the router, not rebooting from the console. To get Shareport to work, I am not trying to do anything complicated - just use a simple USB drive (no complicated drivers here). I know there is an issue with Antivirus/Firewall software, I have seen it on my computers; so disabling the AV software eliminates that issue.
In my previous posts I have deliberately not blamed the router for the shareport issues, but I do find it difficult to imagine that all my computers are wrongly configured or in standby, etc. But I do think, what is the common factor in my system??
Also I did reread the seven pages of posts and it appears from the people who specified Hardware Version; A1/A2 works, systems with A3/A4 do not. I have A3