I’ve created an empty project in “Mac Standalone” and I’ve set the Player Settings > OtherSettings > Rendering > Virtual Reality Supported to “true” (checked).
and I get the following error:
Couldn’t open /Applications/Unity/Unity.app/Contents/VR/oculus/macosx64/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, error: dlopen(/Applications/Unity/Unity.app/Contents/VR/oculus/macosx64/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, 2): Library not loaded: @rpath/LibOVRRT_0.framework/Versions/5/LibOVRRT_0
Referenced from: /Applications/Unity/Unity.app/Contents/VR/oculus/macosx64/OVRPlugin.bundle/Contents/MacOS/OVRPlugin
Reason: image not found
Now if Mac OS X cannot support Virtual Reality at this time, then perhaps one should disable that option.
Also when one switches platform to iOS, the error persists even though the iOS version of the settings don’t contain this option.
You have to install the “Oculus Runtime for OS X” from Oculus first. It installs the LibOVRRT library on your system, plus a Oculus Config Util. It can be found on the Oculus download page:
https://developer.oculus.com/downloads/
Oculus is not actively supporting Mac OS X right now, though, because they think the Mac graphics cards are not up to the speed needed for VR.
I consider this lazy engineering. The virtual reality experience doesn’t have to work on OSX, but it shouldn’t spam the console with NREs either. The correct implementation would be to detect the lack of support and just show regular camera as usual.
This helped me, cheers! It’s funny how none of the guides don’t mention that in order to develop on OSX you need to install OSX Runtime. The link is https://developer.oculus.com/downloads/legacy/ by the way.
Same error on High Sierra with Unity 2017.2.0p2 and the latest OVR plugin
Before the update to High Sierra it used to work 
Couldn’t open Assets/OVR/Plugins/1.21.0/OSXUniversal/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, error: dlopen(Assets/OVR/Plugins/1.21.0/OSXUniversal/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, 2): Symbol not found: __dyld_get_all_image_infos
Referenced from: /Users/xxx/Library/Frameworks/LibOVRRT_0.framework/Versions/5/LibOVRRT_0
Expected in: /usr/lib/libSystem.B.dylib
in /Users/xxx/Library/Frameworks/LibOVRRT_0.framework/Versions/5/LibOVRRT_0
Same error here, after updating to High Sierra, from El Capitan. I was using 5.4.x but try it with 5.6.x and know i have installed 2017.2.0p2. Every one the same error code. On my old vr arcthitecture project, that i can’t continue to is finish.
"
Couldn’t open Assets/OVR/Plugins/1.23.0/OSXUniversal/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, error: dlopen(Assets/OVR/Plugins/1.23.0/OSXUniversal/OVRPlugin.bundle/Contents/MacOS/OVRPlugin, 2): Symbol not found: __dyld_get_all_image_infos
Referenced from: /Users/rvalle/Library/Frameworks/LibOVRRT_0.framework/Versions/5/LibOVRRT_0
Expected in: /usr/lib/libSystem.B.dylib
in /Users/rvalle/Library/Frameworks/LibOVRRT_0.framework/Versions/5/LibOVRRT_0
Oculus Plugin could not be loaded.
"
So, this tests point to the OS. Is not an Oculus neither an Unity problem. Is a OSX problem. I am seriously thinking on going back to El Capitan, because i can’t have my Oculus DK1 iunused, not yet. So, if some one have any light in the end of tunnel, please share here.
Thank you!
Same issue here with Mojave… any update on possible solutions?