[Mediawiki-l] Problem with images and MW 1.11

[Nicolas STRANSKY]

Hi,

I have a problem with MediaWiki v1.11.0 (and PHP 5.2.0-8+etch7
(apache2handler)). For some images, the following syntax just doesn't work:
[[Image:D8 001.jpg]]

All I get is the alt= text and no image. Here is the source of the
resulting page:

,-----------------------------------------------------------------------
|<a href="/wiki/index.php/Image:D8_001.jpg" class="image"
|title="Image:D8 001.jpg"><img alt="Image:D8 001.jpg"
|src="/wiki/thumb.php?f=D8_001.jpg&amp;width=784" width="784"
|height="1109" border="0" /></a>
`-----------------------------------------------------------------------

Indeed, here is what I get when following
/wiki/thumb.php?f=D8_001.jpg&amp;width=784

,-----------------------------------------------------------------------
|Error generating thumbnail
|
|Error generating thumbnail: Image was not scaled, is |the requested
|width bigger than the source?
`-----------------------------------------------------------------------

But the following syntax works, if I specify manually for every image a
pixel size:
[[Image:D8 001.jpg|500px]]
Surprisingly, if I specify the original pixel size of the picture, it
doesn't work. (In this case, [[Image:D8 001.jpg|784px]])

What is the problem ?

Thank you

-- 
Nicolas STRANSKY
Équipe Oncologie Moléculaire             http://www.curie.fr/equipe/301
Institut Curie - UMR 144 - CNRS                 Tel : +33 1 42 34 63 40
26, rue d'Ulm - 75248 Paris Cedex 5 - FRANCE    Fax : +33 1 42 34 63 49