No. Not updating any blobs in this case.
I had to restart the server again. It ran about 8 hours before requiring a restart.
I checked memory before, and 2GB free, so that wasn't an issue.
I ran TCPVIEW and that didn't show anything on port 4550. But it continued to give error 10048.
On another not e- I did notice another nettalk server program on the same machine (not the program I'm having error 10048 with) had lost the PORT setting in the program.serversettings.xml.
I restored the value in the XML, restarted that program, and that is now working again.
But I never had a problem with this program before EITHER.
As part of troubleshooting I have updated to the latest NETTALK from the website.
So I am running a later version than I was previously.
Still stuck. But going to sleep now. The server can just wait if it gets stuck again