Hello, The problem was solved compiling again JdeRobot on the machine. Cheers -- View this message in context: http://jderobot-developer-list.2315034.n4.nabble.com/JdeRobot-Cannot-connect-KobukiViewer-tp4643353p4643355.html Sent from the Jderobot Developer List mailing list archive at Nabble.com.