[magick-users] when I use the command : convert with the option [-layer optimize], error occurs

[wang]

Hi,

when I use the command of ImageMagick like this, the error occurs:

$ convert 150_125_7k_ani6.gif -layers optimize -filter Box -resize 120x90 
150_125_7k_ani6.gif_120_90_Box.gif;
Against the segmentation !

The words maybe differents becasue I run the command on a Japanese Language 
Linux, and I got a Japanse error info like "セグメンテーション違反です".

When I delete the option [-layers optimize], the command can successfule 
excuted.
But the result file 150_125_7k_ani6.gif_120_90_Box.gif is bigger than 
before, which is not i wants.

Is there any miss in the command with [-layers optimize] option ?

Thanks.

wang