Firstly, contact your ISP to see if they are blocking any ports.
Some ISPs block common ports such as 80, 8080, 8081 and so forth. This is why you should not use common ports. Understand that there are also a vast amount of scans via port scanners on common ports at any given time. (Script kiddies are impervious for seeking and finding such open ports.)
Therefore, unless you are familiar with packet capturing, snort, and have a few honey pots - you should never use common ports. Your ISP knows this,and that is why these ports are usually blocked.
Regardless, my best guess to resolve your problem outside of using an off port is to check your DHCP settings. It's always a preference to use a static IP on your LAN for your server.
If you used a CD to setup your networking equipment, then chances are your router is set to renew your local IP every few hours.
You can either choose to extend your IP lease time, or you can simply assign your computer an IP.
If you want to do this then it's quite simple.
Your router is acting as a gateway on 10.0.0.1 thus this is your gateway address.
Your subnet is either 255.0.0.0 - which I doubt, or it's 255.255.255.0 - more likely.
Your DHCP is probably something like 10.0.0.2 - 10.0.0.57. Thus you can easily assign your PC a static IP in this range. To start of with an IP of 10.0.0.2
To assign these values in Windows XP go to Start/Control Panel/Network Connections/ - Right click on your LAN connection/Go into properties/Go into Internet Properties and enter
10.0.0.2 - IP
255.255.255.0 - Subnet Mask
10.0.0.1 - Gateway
DNS - your DSL or Cable DNS
http//portforward.com/networking/dns.htm
Now your network IP is static.
If you cannot access the internet, then double check your subnet, try 255.0.0.0 and 255.255.0.0;
Once you obtain online access, forward all vibe streamer traffic to your static IP/10.0.0.2; if this doesn't resolve your issue, then make sure you are allowing certain traffic to flow through your PC firewall.
Traffic such as the Generic Host Process and Vibe Streamer itself, must be allowed to act as a client and a server, hence allow inbound and outbound traffic for these applications.
If you're still having problems, then try
1.) Rebooting your PC.
2) Try cleaning your cache, I recommend CCleaner.
http//www.ccleaner.com/