If you have just installed the Helium Streamer it might not have had the time to start yet. Please close and restart the Helium Streamer Launcher.
If something isn't correctly configured or the Helium Streamer service isn't running, a warning or error message will be shown next to the Helium Streamer label on the General page of the Helium Streamer Launcher.
The most common reason for this is if Helium Streamer has just been installed and has not yet started up.
Please quit Helium Streamer Launcher and start it again. If this doesn't help, please see follow the instructions in the "I can't find a solution to my problem" article.