--- theme.inc (saved version)
+++ (current document)
@@ -175,42 +175,44 @@
     foreach ($columns as $field => $column) {
       $field_alias = $fields[$field]->field_alias;
       if ($field == $column && empty($fields[$field]->options['exclude'])) {
-        foreach ($$process as $num => $row) {
-          $type = '';
-          foreach ($row as $item) {
-            if (in_array($item, array_keys(_views_calc_calc_options()))) {
-              $type = $item;
-              break;
+        if (is_array($$process)){
+          foreach ($$process as $num => $row) {
+            $type = '';
+            foreach ($row as $item) {
+              if (in_array($item, array_keys(_views_calc_calc_options()))) {
+                $type = $item;
+                break;
+              }
             }
-          }
-          if (!empty($row->$field_alias) || (isset($row->$field_alias) && $row->$field_alias === 0)) {
+            if (!empty($row->$field_alias) || (isset($row->$field_alias) && $row->$field_alias === 0)) {
     
-            // COUNT is always a numeric value, no matter what kind of field it is.
-            if ($type == 'COUNT') {
-              $vars[$process][$type][$column] =  $row->$field_alias;
-            }
-            // Calculations other than COUNT should run the value through the field's theme.
-            // This will allow dates and numeric values to apply the right formatting to the result.
-            else {
-              $vars[$process][$type][$column] =  $fields[$field]->theme($row);
-            }
-          }
-          elseif (!empty($type)) {
-            // Add the calc type label into the first empty column.
-            // Identify which is the sub total and which the grand total
-            // when both are provided.
-            if (empty($added_label[$type])) {
-              if ($process == 'sub_totals') {
-                $label = t("Page !Calculation", array("!Calculation" => $type));
+              // COUNT is always a numeric value, no matter what kind of field it is.
+              if ($type == 'COUNT') {
+                $vars[$process][$type][$column] =  $row->$field_alias;
               }
+              // Calculations other than COUNT should run the value through the field's theme.
+              // This will allow dates and numeric values to apply the right formatting to the result.
               else {
-                $label = t("Total !Calculation", array("!Calculation" => $type));
+                $vars[$process][$type][$column] =  $fields[$field]->theme($row);
               }
-              $vars[$process][$type][$column] = $label;
-              $added_label[$type] = TRUE;
             }
-            else {
-              $vars[$process][$type][$column] = '';
+            elseif (!empty($type)) {
+              // Add the calc type label into the first empty column.
+              // Identify which is the sub total and which the grand total
+              // when both are provided.
+              if (empty($added_label[$type])) {
+                if ($process == 'sub_totals') {
+                  $label = t("Page !Calculation", array("!Calculation" => $type));
+                }
+                else {
+                  $label = t("Total !Calculation", array("!Calculation" => $type));
+                }
+                $vars[$process][$type][$column] = $label;
+                $added_label[$type] = TRUE;
+              }
+              else {
+                $vars[$process][$type][$column] = '';
+              }
             }
           }
         }