[Fluxus] png problems

[gabor papp]

hi,

i encountered some problems with png files. it seems that fluxus does 
not work properly with libpng 1.2.37. when the file is loaded the pixels 
got scrambled. http://www.flickr.com/photos/gaborpapp/3719423017/
i tested this on linux and osx with the same result.
with libpng 1.2.35 everything seems to be fine. except when i try to 
save pixel primitives i get the "Error writing PNG file" message.

(clear)

(define p (build-pixels 16 16))

(with-primitive p
    (pdata-map!
        (lambda (c)
            (rndvec))
        "c")
    (pixels-upload)
    (save-primitive "test.png"))

are you also experiencing this? or is it a problem with my setup?

best,
gabor