Imagemagick: Can't read jpeg's here

[Paul Check <paul@openstreet.com>]

Hi:  When I try to look at a jpeg using display I get the following
(note: gif's working fine):

bash-2.03$ display test.jpg
display: no delegate for this image format (test.jpg).

I see in bug report #43424 that someone had a similar problem and the
issue was versioning.  Here are my current versions:

Debian: potato
kernel: 2.2.14

...and from dpkg:

ii  dpsclient                     0.5.9.1+000216-3
ii  freetype2                    1.3.1-1
ii  gs                               5.10-9
ii  imagemagick              4.2.8-7
ii  libbz2                          0.9.5d-2
ii  libc6                            2.1.3-4
ii  libhdf4g                       4.1r3-4
ii  libjpeg62                     6b-1.2
ii  libmagick4-lzw-dev   4.2.8-2
ii  libmagick4g-lzw         4.2.8-2
ii  libpng2                        1.0.5-0.1
ii  libtiff3g                         3.5.4-4
ii  xlib6g                          3.3.6-3
ii  zlib1g                          1.1.3-5

I also get the same error if I use the non-lzw packages.

What's wrong?

Thanks,
Paul