Hi Dan,
Thanks for getting back to me – the error in logging is
(DG_ImagickThumber->getThumbnail) Failed to open file in Imagick: PostscriptDelegateFailed `/www/wp-content/uploads/2015/10/RidgewayAd-sept15-1-2.pdf’: @ error/pdf.c/ReadPDFImage/663
Can I fix this?
best
LIsa