Blank screen for Liquidfun-testbed problems on XCode 8.3.3

[thesquib]

Following the instructions through:

git clone https://github.com/cocos2d/cocos2d-x-samples.git
cd cocos2d-x-samples
python download-engine.py
cd cocos2d-x-samples/samples/LiquidFun-Testbed/proj.ios_mac
open LiquidFun-Testbed.xcodeproj/

Now I attempt to build and it seems the Liquidfun folder is missing -

Showing Recent Issues
No such file or directory: 'cocos2d-x-samples/libs/liquidfun/liquidfun/liquidfun/Box2D/Box2D/Dynamics/Joints/b2PrismaticJoint.cpp'

Checking in the shell reveals the liquidfun folder is empty:

#ls cocos2d-x-samples/libs/liquidfun/liquidfun
.
..

To try and remedy this I downloaded LiquidFun separately, and placed it in the requested folder. This enabled compilation to complete, but when I run the macOS version I am presented with a black/blank window. Interacting with the window (keys / mouse presses) produces logs as expected.

[Anywhere-Music-Player]

@pandamicro Same with latest Xcode 9. Just black screen and nothing works.
Can anyone help with this? I've downloaded all as indicated in instructions.