Attachment_fu - width and height is null in table?

Hello,

I just installed the attachment_fu plugin, the uploading progress is
working fine, the file is upload corrent, but no resizing or thumb?

The width and height in the table is NULL, I’m getting in the console
“failed: Given Error” for ImageMagick??

Any had the same problem?? and thanks many times for your help

Regards,
Jamal