Hi,
I run into exactly the same problemĀ on ubuntu 14.04 with the same message in the system log. I can take over the physical display, I can start a custom session with the console but I cannot create a new virtual desktop.
I am using nomachine-workstation (evaluation license) 5.0.58-2 on ubuntu together with enterprise client 5.0.58 on windows7
Is there a fix already available for this problem? I attached the log files as requested here https://www.nomachine.com/DT07M00098