Como usar Thumbnail

Pode ser que ajude

1. It will look for any images that you’ve uploaded to your post.

gallery2. If it finds one or more images, it will automatically place the 1st image – as a thumbnail – where it belongs on your site.

Note 1: If you have uploaded multiple images to your post, it will use the #1 image as set in the gallery section of your media uploader (click thumbnail to the right).

Note 2: If you don’t want the image to appear in the post content, just don’t insert it into the post. The plugin will still grab the 1st image you’ve uploaded to the post and place it correctly.

3. If it does not find any images (because you didn’t upload any) for the post, no image will appear for that post in the Featured Article section. As for the post thumbnails, it will place a default thumbnail unless you have deactivated that feature on your Theme Settings page.
Option 2 – Use Custom Fields

If, for whatever reason, you prefer not to use the plugin, you can simply use custom fields. With this method, you will need to scroll down to the Custom Fields section on the Write Post screen and fill in the appropriate data.

For post thumbnail images:

* Name = post_thumbnail
* Value = the URL for the image (get the image URL from the media uploader)

Não esquecer que “key” (Name = post_thumbnail) pode ser diferente, isso depende do template..

Cada tema usa um método diferente ou uma chave diferente no custom field. É só examinar com calma a documentação do tema que certamente essa informação estará lá.

Mas nada impede que vc dê uma testada no Joomla. Acho que vc vai achar mais difícil ainda…

Fala Renato.

Voce não está sabendo configurar o seu custom fields (campos personalizados).

No readme file tem as explicações corretas de como usar o custom fields. Tanto para um quanto para outro:

post image :
————

1. click on custom feild and then add new custom field
2. in name write : screen
3. in value write the path of image eg : http://wptemaplte.co.cc/upload/imageabc.jpg
4. click on update button
5. use images size width : 120px and height : 100px

featured content gallery image:
——————————-
1. click on custom feild and then add new custom field
2. in name write : articleimg
3. in value write the path of image eg : http://wptemaplte.co.cc/upload/imageabc.jpg
4. click on update button
5. use images size width : 650px and height : 220px

As duas palavras-chaves são screen e articleimg. As duas, com seus respectivos end das imagens colocadas corretamente o farão funcionar.

O template é muito bom, se vc coneguir matar essa teu site vai ficar bem melhor.