front end website working fine. but backend 500 error

Hi,

I was using Storebox quick start and it was working until today morning and when I try to login. it gives me an error saying

500 - An error has occurred.

JHtml: :icons not supported. File not found.

Return to Control Panel

Can you please help. I tried checking a thread and overwriting that content folder default.php. but still didnt work. so i reverse it back.

can you please help

http://www.shopsilvapieces.com

Please look here >> http://forum.joomla.org/viewtopic.php?f=541&t=342375
It is probably related with some 3rd party extension. Template don't have any affect to Joomla! backend.

i have not installed any extensions recently. what I only did was changing the colors of the fonts I cannot event check or stop anything get in to backend.

can you please help.

Hi, our template or module(s) can not breake backend because joomla does not allow that.
You have such a error after login to backend or in selected sections like module manager, template manager etc.