This error message is saying that for some reason the installer could not be extracted in your NI mate directory.
When you opened NI mate, did you do so by right clicking the icon in Applications and choosing “open”? If you double click the icon OS X should give you a warning that the application is not signed and prevent you from executing it, but it’s always a possibility NI mate was launched using some permissions that don’t allow changing the files inside the bundle.
Could you check if you have a file called Delicode_Sensor_OpenNI_2.00_Installer.zip in your temp folder? You can find this folder by opening your terminal and typing: echo $TMPDIR.
If the file exists, try manually unzipping its contents:
cp $TMPDIR/Delicode_Sensor_OpenNI_2.0_Installer.zip /Applications/Delicode_NI_mate.app
Then try starting NI mate again and see if the sensor works.
If you get a permission denied error, try:
sudo chmod +x /Applications/Delicode_NI_mate.app/Contents/MacOS/Delicode_Sensor*
We are still trying to iron out an installer that would work for all Mac users. Unfortunately, it seems different Macs handle permissions differently.