Apologies, I recently changed my website configuration, moved away from VestaCP on that server and forgot to restore the subdomain with the NX files, it should be working properly now.Could you please restore the various download links referred by the script as well as the client download link provided in your tutorial. I used to use 3.5 on several Ubuntu LTS 12.04 amd64 machines last year. Worked fantastic. Now I don't have the binaries and NX 4 sucks. Spent a whole day & unable to get it working.