Here is some additional info about the LS version I am using that may be helpful:

18-Apr-14 17:30:15,202|INFO |LightstreamerLogger.init |main |Lightstreamer Server 5.1.1 build 1623.2
18-Apr-14 17:30:15,226|WARN |LightstreamerLogger.init |main |Lightstreamer is running with a Demo license, which has a limit of 20 concurrent users and can be used for evaluation, development, and testing, but not for production. If you need to evaluate Lightstreamer without this user limit, or need any information on the other license types, please contact info@lightstreamer.com