If you have a valid license but still get the licensing error message, verify that you have followed correctly the setup instructions. Note that you can specify the location of the urbi.key license to the Urbi controller, in the .wbt files, within the "controllerArgs" field. Just add "-l" and the absolute path of your license file to the field line. Exemple (with a license file urbi.key located in C:/mylicensefolder/)

controllerArgs "-f -l C:/mylicensefolder/urbi.key  -p 54000 32 "

Contact us at Gostai if you still have some problems with the license, and we will resolve the problem with you.