Patch for the Drupal Image javascript crop module that fixes images problems introduced in Drupal 7.20. This follows the changes in https://drupal.org/node/1924078, but is applied to version 7.x-1.0-rc3 rather than 7.x-1.x-dev

imagecrop_query_string.patch

diff --git a/includes/imagecrop.admin.inc b/includes/imagecrop.admin.inc
index ae3d663..ac04f15 100644
--- a/includes/imagecrop.admin.inc
+++ b/includes/imagecrop.admin.inc
@@ -153,7 +153,7 @@ function imagecrop_image_styles_overview($fid, $style_name, $entity_type = NULL,
     $imagecrop->addImagecropUi(TRUE);
 
     $image_url = image_style_url($style_name, $imagecrop->getFile()->uri);
-    $image_url .= (variable_get('clean_url', 0) ? '?' : '&');
+    $image_url .= (!variable_get('clean_url', 0) || strpos($image_url, '?') !== FALSE) ? '&' : '?';
     $image_url .= 'time=' . $_SERVER['REQUEST_TIME'];
 
     return theme('imagecrop_overview', array(
diff --git a/includes/imagecrop.class.inc b/includes/imagecrop.class.inc
index 0af9a60..714daca 100644
--- a/includes/imagecrop.class.inc
+++ b/includes/imagecrop.class.inc
@@ -299,7 +299,8 @@ class ImageCrop {
    */
   public function getCropDestination($filepath = TRUE) {
     $image_url = ($filepath) ?  file_create_url($this->cropDestination) : $this->cropDestination;
-    $image_url .= '?time=' . $_SERVER['REQUEST_TIME'];
+    $image_url .= (strpos($image_url, '?') !== FALSE) ? '&' : '?';
+    $image_url .= 'time=' . $_SERVER['REQUEST_TIME'];
     return $image_url;
   }
 
diff --git a/js/imagecrop.js b/js/imagecrop.js
index 6d457e6..e752560 100644
--- a/js/imagecrop.js
+++ b/js/imagecrop.js
@@ -26,7 +26,8 @@ Drupal.Imagecrop.changeViewedImage = function(style_name) {
  */
 Drupal.Imagecrop.refreshImage = function() {
   var source = $(this).attr('src');
-  $(this).attr('src', (source + '?time=' + new Date().getTime()));
+  var delimiter = source.indexOf('?') === -1 ? '?' : '&';
+  $(this).attr('src', (source + delimiter + 'time=' + new Date().getTime()));
 }
 
 })(jQuery); 
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