diff --git a/ubercart/uc_attribute/uc_attribute.admin.inc b/ubercart/uc_attribute/uc_attribute.admin.inc
index 73745ca..f1b96f4 100644
--- a/ubercart/uc_attribute/uc_attribute.admin.inc
+++ b/ubercart/uc_attribute/uc_attribute.admin.inc
@@ -1034,9 +1034,21 @@ function uc_object_options_form_submit($form, &$form_state) {
  */
 function uc_product_adjustments_form($form_state, $node) {
   drupal_set_title(check_plain($node->title));
-  $nid = $node->nid;
 
+  // Check the number of option combinations before continuing, and abort if 
+  // there are too many.
+  $combinations = uc_product_adjustments_form_combinations_check($node);
+  $max_combinations = 1000;
+  if($combinations > $max_combinations) {
+    $form['description'] = array(
+      '#type' => 'markup',
+      '#value' => t('There are !count possible combinations of attribute options for this product. SKU alternates cannot be set for products with more than !max combinations.', array('!count' => $combinations, '!max' => $max_combinations)),
+    );
+    return $form;
+  }
+  
   //Populate table and such.
+  $nid = $node->nid;
   $model = $node->model;
   $query_select = "SELECT DISTINCT";
   $query_from = " FROM";
@@ -1162,6 +1174,31 @@ function uc_product_adjustments_form($form_state, $node) {
 }
 
 /**
+ * Determines whether a product has too many potential combinations of attribute
+ * options before exposing them on the adjustments form.
+ *
+ * @param $node
+ *   A product node object to check.
+ * @return An integer value representing the number of combinations.
+ * 
+ * @see uc_product_adjustments_form()
+ */
+function uc_product_adjustments_form_combinations_check($node) {
+  $combinations = 1;
+  foreach ($node->attributes AS $aid => $attribute) {
+    // Ignore attributes with checkbox displays.
+    if ($attribute->display == 3) {
+      continue;
+    }
+    // Only count attributes that provide at least one option.
+    if ($count_options = count($attribute->options)) {
+      $combinations = $combinations * $count_options;
+    }
+  }
+  return $combinations; 
+}
+
+/**
  * @see uc_product_adjustments_form()
  */
 function uc_product_adjustments_form_submit($form, &$form_state) {