I was working on localhost with resizing images and everything was great. Than I uploaded to my server and things got interesting. After searching around, looks like I have to enable php-gd on my server. I tried running the line sudo apt-get install php5-gd using putty, and it didn't work. Any ideas why? Also, after the install, I assume I will need to run the function sudo reboot right? clearly I'm not an expert in this area :p