That didn't format like the email, so let me try again here.
Installing Willow-Playground from the instructions:
Metacello new
baseline: 'WillowPlayground';
repository: 'github://ba-st/Willow-Playground:release-candidate/source';
load.
I have tried this in 9.0 64-bit and 8.0 64-bit, but it always stops with the Inspector:
"a MetacelloScriptApiExecutor"
self
Is that the expected behavior when it successfully completes, or did it not install?