Unable to view JPEG files in the server

Hi all, I have a question to ask, I recently installed OSX EL CAPITAN on my IMAC
(spec: 27-Inch Late 2013, CPU 3.5GHz Intel Core i7, 24GB Memory RAM 1600 MHz DDR3.....)

After OSX EL CAPITAN installation completed, I found a few problems and the most irritating one is the JPEG viewing on the server disappeared (see my below uploaded image) , JPEG viewing is all good on my IMAC, can somebody help me solve this minor problem please?

THANK YOU



http://s27.postimg.org/x6cpr9lcx/Screen_Shot_2015_10_15_at_2_26_19_PM.png

 

Hello, can someone please help me?

Thanks