It seems that an https media URL, or one that redirects to https, results in a 400 error. Is https not supported?
http://ameasure.com/chart/121 works in the preview tool, but https://ameasure.com/chart/121 results in “Internal Error. Most likely an fetcher error.” on the tool and a 400 error on the server. (s/an/a/ in any case.)
Also, the image on a photo card seems to be fetched twice. Will this always happen, or is it just happening in the preview tool? Since Twitter stores the image locally I was planning to delete it after it has been fetched. Is that an inappropriate strategy?
Thanks for any help.