Hello,
I have created a small script-fu for batch processing, but I have stuck on defining the parasite, I would be thankful for help. I have found that parasite have structure of (name, flags, data) in perl-fu and (name, flags, size, data) in C, but I haven't found on web and in existing scrit-fu's the use of it in Scheme. My script:

define (script-fu-xcf2gif infile outfile) (let*
(
(img (car (gimp-file-load 1 infile infile))) (drawable (car (gimp-drawable-get-image img))) (parasite '("gimp-comment", PERSISTENT, 13, "some comment")) )
(gimp-image-flatten img)
(gimp-image-parasite-detach img "gimp-comment") (gimp-image-parasite-attach img parasite) (gimp-image-convert-indexed img 1 0 256 0 1 "") (file-gif-save 1 img drawable outfile outfile 1 0 0 0) )
)
(script-fu-register "script-fu-xcf2gif" "/Xtns/Script-Fu/Test/xcftogif" "XCFtoGIF"
"Irek Slonina"
"Irek Slonina"
"2004"
""
)

and I run it like this:

[ireks@brightstar ufki]$ gimp -d -i -s -S -c -b '(script-fu-xcf2gif "blokada.xcf" "blokada.gif")' '(gimp-quit 0)' This is a development version of The GIMP. Debug messages may appear here.

gimp_composite: use=yes, verbose=no +mmx +sse +sse2 -3dnow -altivec -vis batch command: experienced an execution error.

(gimp:2766): Gimp-Plug-In-WARNING **: plug_in_close: plug-in aborted before sending its procedure return values [ireks@brightstar ufki]$

Could you point me where could be the problem? (execution error is on line with parasite-attach).

I am running gimp-2.0-0.pre1.2.

Regards, Irek Slonina