I had the same problem. However, you don’t need to completely remove nomachine app. The client works fine. It is the server that gives you kernel panic. You need to remove the following to avoid kernel panic:
1. nomachine’s kext in folder /System/Library/Extensions
2. remove *nx* in /Library/LaunchStartItems, /Library/LaunchAgent, /Library/LaunchDaemon
I don’t remember the files exactly, but you get the idea — just remove it from start up scripts so that the daemon is not started. The client works fine. Of course, if you removed those, you won’t be able to remote into your mac. If you need that, you may have to look deeper into the scripts and plist to pin point the problem.