Images not appearing for summary_large_image card

[tridium]

I’ve been approved for using the card “summary_large_image” and only recently noticed that the large image isn’t appearing. After doing some research, it looks like the robots.txt was blocking access to our files folder. I’ve since whitelisted Twitterbot but still nothing is showing up.

Robots.txt: http://dpreview.com/robots.txt

Metadata from sample article:

<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:site" content="@dpreview">
<meta name="twitter:creator" content="@dpreview">
<meta name="twitter:title" content="Activeon launches Solar X action camera that&#39;s powered by the sun">
<meta name="twitter:description" content="A solar-powered action camera that can take 70% of its charge from the sun in just 30 minutes has been announced by Activeon. The Solar X uses a 16MP CMOS sensor to shoot a combination of stills and video footage, and can supplement its two-hour internal battery with four hours of additional charge from a pair of solar panels mounted on its detachable charging case. Read more">
<meta name="twitter:image" content="http://www.dpreview.com/files/p/E~C0x100S800x600T600x450~articles/0901286456/solar.png">
<meta name="twitter:url" content="http://www.dpreview.com/news/0901286456/activeon-launches-solar-x-action-camera-that-s-powered-by-the-sun">

[andypiper]

How recently did you make the change, and are you sharing new, or existing URLs?

Per the Cards Troubleshooting page, the crawler caches information for around 7 days so you may need to be patient while the change ripples to existing URLs.

[tridium]

Thanks. I missed that fact about the propagation time. I made the changes this morning and it was an old article. I thought running it through the card validation with a unique hash would’ve been sufficient. I’ll wait to see if it changes and report back.