System info: Joomla 3.7.4
PHP: 7.0.14
Web Server: Apache/2.4/25
K2 version: 2.7.1

Hello,

Building a blog page using the Masonry pattern, I am unable to assign an image to the topics.

When either uploading or selecting the jpg, I get the following error on save:
The image was not uploaded. Please ensure that you used a valid image file and that the file uploads are properly configured on your server.

Upon inspection of the element, the src attribute for the image is /
I can upload images with the media manager without an issue.
I have checked that all the permissions on media/ and cache are set to writable.

I am kind of lost beyond that. Help please!

Thanks,

O;

Hello Olivier,

Is the GD library properly installed in your server?

Duh... That was it... Thank you... (looking for a rock to crawl under in shame).

To be fair, GD is installed in 99.9% of times, so I would have never guessed it too :)