making "pretty plugins" pretty

coincidentally i installed "pretty plugins" and was testing it out last night and this morning and it did not look so pretty.

then the update popped up and all seemed well again.

however, in trying to replace an image, i created the suggested 600 x 450 png in photoshop (wed preset with 72dpi),
but the entire image does not show (see screenshot)

is this a bug ?
am i doing something wrong ?

please see 2 images,
original image and how it looks on dashboard.

any kind assistance in this would be greatly appreciated.

kind regards,

RC.