Forum OpenACS Q&A: error adding to photo-album

I get an error when uploading a picture in one of my albums.
Here's the message I get below the line.

Thanks for any help.

Yves.

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Request Error
couldn't execute "/usr/local/bin/identify": no such file or directory
    while executing
"exec [ad_parameter ImageMagickPath]/identify $filename"
    (procedure "pa_image_width_height" line 2)
    invoked from within
"pa_image_width_height $tmp_filename "base_width" "base_height""
    ("uplevel" body line 76)
    invoked from within
"uplevel {
          # /packages/photo-album/www/photo-add-2.tcl

ad_page_contract {
    adds a photo to an album

    @author mailto:bags@arsdigita.com
    @cre..."
    (procedure "code::tcl::/home/ygol/web/oacs/packages/photo-album/www/phot..." line 2)
    invoked from within
"code::tcl::$__adp_stub"
    invoked from within
"if { [file exists $__adp_stub.tcl] } {

      # ensure that data source preparation procedure exists and is up-to-date
      adp_init tcl $__adp_stub
..."
    ("uplevel" body line 3)
    invoked from within
"uplevel {

    if { [file exists $__adp_stub.tcl] } {

      # ensure that data source preparation procedure exists and is up-to-date
      adp_init t..."
    (procedure "adp_prepare" line 2)
    invoked from within
"adp_prepare "
    (procedure "template::adp_parse" line 30)
    invoked from within
"template::adp_parse [file root [ad_conn file]] {}"
    (procedure "adp_parse_ad_conn_file" line 7)
    invoked from within
"$handler"
    ("uplevel" body line 2)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
    $handler
      } ad_script_abort val {
    # do nothing
      }"
    invoked from within
"rp_serve_concrete_file [ad_conn file]"
    (procedure "rp_serve_abstract_file" line 60)
    invoked from within
"rp_serve_abstract_file "$root/$path""
    ("uplevel" body line 2)
    invoked from within
"uplevel $code"
    invoked from within
"ad_try {
    rp_serve_abstract_file "$root/$path"
    set tcl_url2file([ad_conn url]) [ad_conn file]
    set tcl_url2path_info([ad_conn url]) [ad_conn path_inf..."
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