something wrong in photo section ?

I got this when checking the photo side this morning,and again just now. Only one image, and the following error message next to it. Who does the troublshooting for this?

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  Finnish and Swedish soldiers

  Finnish and Swedish soldiers
  Views: 23
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  Fatal error: Call to a member function onLoad() on a non-object in /home/ww2admin/public_html/modules/core/classes

Occasional failed uploads, best thing to simply delete it.

Yup just click the error message and delete the image.

Alright, I didnt know if it were a small thing, or a more general problem affecting the photo section .