Hello,
We enable USB subsystem only on well tested OSX releases.
We tested already 10.10.4 and users can enable it safely.
We will do it in the next release, but you can add the new MAC OS (10.10.4) to nxusb.sh:
1. change the curent directory:
cd /Applications/NoMachine.app/Contents/Frameworks/scripts/restricted
2. open the file nxusb.sh:
sudo vim nxusb.sh
3. add the new system in line 329 after “$systemVersion” == “10.10.3″:
|| “$systemVersion” == “10.10.4″
4. save the changes:
Esc + :wq
5. restart nxusb.sh:
sudo ./nxusb.sh –restart