diff --git a/lib/portfolio/exporter.php b/lib/portfolio/exporter.php
index 3baf0b5bcb3..79bfc8f6b4f 100644
--- a/lib/portfolio/exporter.php
+++ b/lib/portfolio/exporter.php
@@ -722,15 +722,18 @@ class portfolio_exporter {
         if ($this->get('user')->id != $USER->id) { // make sure it belongs to the right user
             throw new portfolio_exception('notyours', 'portfolio');
         }
-        if (!$readonly && $this->get('instance') && !$this->get('instance')->allows_multiple_exports()
-            && ($already = portfolio_existing_exports($this->get('user')->id, $this->get('instance')->get('plugin')))
-            && array_shift(array_keys($already)) != $this->get('id')
-        ) {
-            $a = (object)array(
-                'plugin'  => $this->get('instance')->get('plugin'),
-                'link'    => $CFG->wwwroot . '/user/portfoliologs.php',
-            );
-            throw new portfolio_exception('nomultipleexports', 'portfolio', '', $a);
+        if (!$readonly && $this->get('instance') && !$this->get('instance')->allows_multiple_exports()) {
+            $already = portfolio_existing_exports($this->get('user')->id, $this->get('instance')->get('plugin'));
+            $already = array_keys($already);
+
+            if (array_shift($already) != $this->get('id')) {
+
+                $a = (object)array(
+                    'plugin'  => $this->get('instance')->get('plugin'),
+                    'link'    => $CFG->wwwroot . '/user/portfoliologs.php',
+                );
+                throw new portfolio_exception('nomultipleexports', 'portfolio', '', $a);
+            }
         }
         if (!$this->caller->check_permissions()) { // recall the caller permission check
             throw new portfolio_caller_exception('nopermissions', 'portfolio', $this->caller->get_return_url());
diff --git a/mod/assign/portfolio_callback.php b/mod/assign/portfolio_callback.php
index cee75bcd272..71e6d820e5d 100644
--- a/mod/assign/portfolio_callback.php
+++ b/mod/assign/portfolio_callback.php
@@ -45,6 +45,9 @@ class assign_portfolio_caller extends portfolio_module_caller_base {
     /** @var int callback arg - the id of submission we export */
     protected $sid;
 
+    /** @var string component of the submission files we export*/
+    protected $component;
+
     /** @var string callback arg - the area of submission files we export */
     protected $area;
 
@@ -60,7 +63,6 @@ class assign_portfolio_caller extends portfolio_module_caller_base {
     /** @var string callback arg - the name of the editor field we export */
     protected $editor;
 
-
    /**
     * callback arg for a single file export
     */
diff --git a/portfolio/boxnet/lib.php b/portfolio/boxnet/lib.php
index 120f61e8030..a793767c072 100644
--- a/portfolio/boxnet/lib.php
+++ b/portfolio/boxnet/lib.php
@@ -37,8 +37,9 @@ class portfolio_plugin_boxnet extends portfolio_plugin_push_base {
                 )
             );
             if (array_key_exists('status', $return) && $return['status'] == 'upload_ok'
-                && array_key_exists('id', $return) && count($return['id']) == 1) {
-                $this->rename_file($return['id'][array_pop(array_keys($return['id']))], $file->get_filename());
+                    && array_key_exists('id', $return) && count($return['id']) == 1) {
+                $returnid = array_keys($return['id']);
+                $this->rename_file($return['id'][array_pop($returnid)], $file->get_filename());
                 // if this fails, the file was sent but not renamed - this triggers a warning but is not fatal.
             }
         }