I have the same problem and wonder whether there is meanwhile a solution for it.
I cannot re-install my licence and get similar errors like:
"no buffer space available. The socket cannot be created".
I have just made a fresh Windows XP SP2 installation.
I have no registery program running, no antivirus or 3rd party firewall.
I have switched off the standard Windows XP firewall but that does not help.
We do have an ISA server firwall but we had the same before when BW worked find. I have also switched off this firewall but the problem remains.
We do have a proxy server but without it we have no Internet connection.
With the XP firewall, the ISA and the proxy server switched on, I can easily access your secure site
https://www.softwrap.com.
Any idea what this can be?