Can't update lock screen after 8.1 Update 1

[ChazTyldsley]

Since updating I've been unable to change my lock screen image. Amazing lock screen produces an error and says it cannot change my lockscreen. When I go to do this manually it just has a spinning circle where the image preview is and it never loads or changes. Any ideas? Anyone else has this bug?

 

[S_E_R]

i recently updated my lumia 520 to 8.1 and cannot change my lockscreen to a pic and cannot change my start screen to a pic either...any suggestions