Status of SMW timeline project
A good alternative is this new timeline format: https://www.mediawiki.org/wiki/Extension:ChapTimeline
Thanks Jeroen. I've had a few email exchanges with Yuri on this and still not managed to get it working. It would help my confidence to see it working on a wiki somewhere. I've offered my own Sandbox site but no takers yet. My provisional judgement is that it has great potential but is currently in a state somewhere between raw and totally unusable on a production site.