I have 3 sites with WordPress on a RedHat Centos server. Everything were fine until days ago, when I needed to recompile Apache to use mb_string, so I did it using WHM "Easy Apache".
But from then, my sites aren't creating image sizes. I mean, when I upload an image, aditional sizes (already defined on functions) aren't created. If I look inside media folders, only the original file is there, and none thumbnail or extra sizes. When I try to insert media inside posts, no aditional sizes appears on menu.
Any idea on what happened? Thank you all.