Please can someone help me find a solution to my problem. When I click 'browse' to upload an image either into an Item or Category I am directed to my folder on my hard-disk but when I click the apply button, no image is displayed. Please what am I doing wrong I've tried every which way... Its Christmas Day and I'm Stressed :(

First, please report the versions of joomla and k2 your using to us.
Go to K2 dashboard and check the information tab
Be sure mb_internal encoding is enabled for your server
Next, Go to joomla global settings and turn error reporting to highest
Try to add an item image and then save the item. If an error is reported post it here