Install in four steps
Follow the trail.
01
Download
One click, one zip. Nothing installed yet.
02
Extract
Unzip it wherever you like. Desktop works.
03
Install
Open chrome://extensions, flip on Developer mode, click Load unpacked, and pick the folder.
04
Record
Reproduce the bug once. TRAIL records the session while you do.
Paste this into your address bar:chrome://extensions
Found a bug in TRAIL?
Beta software breaks. That's the point. If TRAIL acts up, open an issue and tell me what happened.