Hello,
The license should not be the issue. If it was, you would not be able to start a debug session at all
Try resetting the perspective or cleaning the workspace:
http://processors.wiki.ti.com/index.php/Troubleshooting_CCSv5#General_IDE
Also note that your CCS version is a bit old. Updating to the latest 5.4 version is recommended (you don't need a new license for it)
Thanks
ki