DllNotFoundException: libnuitrack – nuitrack.NativeNuitrack.Init

An article by mgear    3 Comments

Briefly tested https://nuitrack.com/ in unity, and had this error when trying to run examples:

DllNotFoundException: libnuitrack
nuitrack.NativeNuitrack.Init (System.String config)
nuitrack.Nuitrack.Init (System.String config, NuitrackMode mode)
NuitrackManager.NuitrackInit () (at Assets/NuitrackSDK/Nuitrack/NuitrackManager.cs:218)
NuitrackManager.Awake () (at Assets/NuitrackSDK/Nuitrack/NuitrackManager.cs:117)

There is a thread about it in nuitrack forums, https://community.nuitrack.com/t/dllnotfoundexception-libnuitrack/562/23
and the solution was that you need to set System PATH correctly (and reboot pc after it).

Noticed the issue with Process Monitor, Unity was not looking from the right folder (even though i had added ..bin\ folder in the USER variables PATH)

Solution:
– Download nuitrack SDK (64bit) http://download.3divi.com/Nuitrack/platforms/nuitrack-win64.zip
– Unzip
– Install OpenNI-Win64-1.5.7-Dev.msi
– Edit windows environment variables (type path in start menu). NOTE: Modify SYSTEM variables below (not the USER variables above)
– Add NUITRACK_HOME variable and set path to your folder, for example:  C:\Users\username\Downloads\nuitrack-win64\nuitrack
– Modify PATH variable, add new item, for example:  C:\Users\username\Downloads\nuitrack-win64\nuitrack\bin
– That is the folder containing the missing dll
– Reboot your pc, and test example scenes in unity, should have no more dll error

References:
– Nuitrack installation instructions: http://download.3divi.com/Nuitrack/doc/Installation_page.html
– Nuitrack unitypackage: https://nuitrack.com (scroll down the page, see “Unity SDK & Samples”, click download)