Cocos2d Samples have blank screen on macOS

Hey all,

I’m trying to get the cocos2d samples running from https://github.com/cocos2d/cocos2d-x-samples - in particular the Liquidfun-testbed. I’m running XCode 8.3.3 (because XCode 9.x seems to completely unstable).
I have got 3.16 compiling, and the tests run fine.

So the readme says to do the following-

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
.
..

Manually placing the LiquidFun library enablee 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, but nothing appears on the screen.

Any help would be appreciated.
Thanks!

Use cpp-tests.