...
Once debugging is enabled, scan the log to see if any errors stand out that may be causing your agent to fail when communicating to the server.
Known Problems
Continua CI uses WCF between the agent and the server, if the clocks of the agent and server machines are too far apart, the agent will gets an exception while registering :
Additional support
After running through the steps listed above, if your agent cannot register to the server then contact support either through our Continua forums or contact us on our support email: support@finalbuilder.com.au
...