As of Scorecerer for iPad version 7, we are now using the Apple Bonjour system (also known as zero-configuration) to allow Scorecerer Companion/Pro on your desktop to find your iPad automatically. There is no longer any need to configure IP addresses and/or ports. This process also eliminates problems that are related to anti-virus and firewalls installed on your computer.If you are using Windows, the Bonjour system may not already be installed if you do not have Apple's iTunes application on your computer. If you do not have (nor want) iTunes installed, you can just install the Bonjour services directly. Please see this knowledgebase article.
Bonjour is built into OS X so Macintosh users do not need to install Bonjour themselves.
Make sure you have updated the Scorecerer Desktop Companion to version 7 as well. Earlier versions will NOT work.
Instructions for performing a sync with the new system can be found here.