Cannot set Homepage logo after upgrade. Image reverts to stock apple image.

[Platetronics]

Hi Guys,

 

Just upgraded from v 1.5.5.0 to v 1.5.6.0

 

Since doing this, my homepage logo has been replaced by the stock iphone,ipad etc. image.

 

Even when I try to change it back to my image, the iphone,ipad etc. image reappears, though in the size of the image I have uploaded. 

 

Here is a pastebin of the logs: http://pastebin.com/WhL4XGYe

 

And, a screenshot of my website (have disabled the image now): 

 

Any help would be great!