Redmine

What did you write?
Did you try with an underscore in place of the space?

Seems to work here with:

{{thumbnail(Sin_titulo.png, size=150, title=Thumbnail)}}

If you're talking about automatically displayed thumbmails, you have to check Display attachment thumbnails settings in Administration to activate it.

Make sure that convert (from imagemagick) is available on your system.

I write and not work (the same result), the option Display attachment thumbnails is checked and I have RMagick installed.

Luis Serrano Aranda wrote:

I write and not work (the same result), the option Display attachment thumbnails is checked and I have RMagick installed.

As said JPL, make sure that the convert command is accessible in the path to the user running the application.

Thanks Etienne but, what is the process to know if the convert command is accessible in the path to the user running the application.

I had the same issue on a turnkey VM and I solved the problem changing /var/www/railsapp/tmp/thumbnails rights for the user running the application

Luis Serrano Aranda wrote:

Thanks Etienne but, what is the process to know if the convert command is accessible in the path to the user running the application.

You can su either a which convert or a convert -version with this user login.

Still not working, my default folder for attachments is redmine/files and with firebug in the thumbnail look in the folder redmine/atachments/thumbnail
I changed the default folder for atachments to redmine/atachments and create inside the folder thumbnail, configure the acces and the thumbnail fails...

It is necessary modify the configuration.yml file (this line)

1. Absolute path (e.g. /usr/bin/convert, c:/im/convert.exe) to
2. the ImageMagick's `convert` binary. Used to generate attachment thumbnails.
   #imagemagick_convert_command:

Ups I needed to install the library

sudo apt-get install imagemagick

FWIW I had this problem too, and the fix for me was that proposed by Antoine: I had to make tmp/thumbnails writeable by the application.

Redmine was telling me that ImageMagick was installed but I also had to install it with

$ sudo apt-get install imagemagick
[...]
The following NEW packages will be automatically installed:
  hicolor-icon-theme imagemagick libnetpbm10 netpbm
[...]

It works now

Same here, Redmine was saying imagemagick is available but it wasn't.

I did this:

hedin@rbdev:~$ sudo aptitude install imagemagick
hedin@rbdev:~$ sudo /etc/init.d/apache2 restart

It works.