Please check you TraderAgent version. If it is older than 2.6.0 please upgrade it.
You can download the latest version from our site

Please note, the filename has been changed to TraderAgent.ex4 from IceFX.TraderAgent.ex4!

If you have up-date-version and message appears, the error message means that TraderAgent has a problem with the internet connection to reach our license server. 

If you use antivirus or malware/spyware, please add terminal.exe, TraderAgent.dll to exceptions.