How can I check if I'm using the latest version of the server?
Go to the server homepage (for example, http://localhost:5080/live/). In the top left corner, under the Red5Pro logo, you should see "Red5 Pro Server Version" with a number listed in red. See if this matches up with the latest server release number, which can be found on the Release Notes page.
(You'll also find a link on that page to update to the latest version, if necessary).