Extension talk:PDFThumbnails

How to preview a different page (page 2) from a pdf?

Extension fails

 * Erreur lors de la création de la miniature : Error: /VMerror in --]--
 * VM status: 2 12510916 12525816
 * Current allocation mode is local
 * Last OS error: 12
 * GPL Ghostscript 8.70: Unrecoverable error, exit code 1
 * convert: Postscript delegate failed `/var/www/wiki/images/0/0d/2868835198.pdf': No such file or directory @ pdf.c/ReadPDFImage/612.
 * convert: missing an image filename `JPG:/var/www/wiki/images/thumb/0/0d/2868835198.pdf/page1-424px-2868835198.pdf.jpg' @ convert.c/ConvertImageCommand/2775.

Syntax unclear
How is it supposed to work? What syntax to use? Thanks, Hikey