conversion from rgb jpeg to cmyk jpeg problem

[sonusdream]

i tried converting a jpg image that uses rgb color profile to cmyk jpg using this:

convert rgb.jpg -profile USWebCoatedSWOP.icc cmyk.jpg

but i am getting this error:

convert: Color profile operates on another colorpsace 'icm'

i've been googling for a solution to this problem but i cant seem to find one.

btw, i'm using the latest IM version 6.3.1

hope you can help me with this one.


thanks in advance,

sonus