The ratio of your pictures is 1054X704. The editor default max width/height is 1024/768. 

So, editor will try to resize the photo size. However for this particular picture, its actual size is compressed. So when editor resizes the photo, its actual size will be larger than the value you set. 

We will provide a more reasonable message when the problem occurs in next patch. 

For now, you can change the MaxImageWidth and MaxImageHeight to a large value to avoid this issue. 

In “CuteSoft_Client\CuteEditor\Configuration\Security\Default.config”

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