White boxes in Photoshop

[markyboy.1967]

A few images I'm trying to open in Photoshop are just showing as black white boxes where the image should be, others in same group open fine.Not sure why as the preview shows the image fine, its just when i open to edit it that i get the white box.Any ideas?

 

[markyboy.1967]

Managed to get it, just had to shut the pc down, as just shutting photoshop didnt work. All fixed now though.