Good day, 
  
When i want to export a chart to pdf works fine but when export to jpg or png i can download the file but i cant open it. I have enable the gd library in my php and for the gzip the options in my php are:  
  
Content-Encoding = gzip 
Accept-Encoding  = gzip, deflate 
  
So i belive  that i have everything installed. What could be the problem? 
  
Thanks 
  
P.D. Sorry for my bad english