diff --git a/apps.profile.inc b/apps.profile.inc
index 4fd3433..b453621 100755
--- a/apps.profile.inc
+++ b/apps.profile.inc
@@ -27,26 +27,26 @@ function apps_profile_install_tasks($install_state, $apps_server) {
       'apps_profile_download_app_modules_' . $apps_server_name => array(
         'display' => FALSE,
         'type' => 'batch',
-        'run' => (isset($_SESSION['apps']))?INSTALL_TASK_RUN_IF_NOT_COMPLETED:INSTALL_TASK_SKIP,
+        'run' => (!empty($_SESSION['apps_downloads'])) ? INSTALL_TASK_RUN_IF_NOT_COMPLETED : INSTALL_TASK_SKIP,
         'function' => 'apps_profile_download_app_modules',
       ),
       // Only need this if using filetransfer authorization.
       'apps_profile_authorize_transfer_' . $apps_server_name => array(
         'display' => FALSE,
         'type' => 'form',
-        'run' => (!is_writeable(conf_path()) && isset($_SESSION['apps']))?INSTALL_TASK_RUN_IF_NOT_COMPLETED:INSTALL_TASK_SKIP,
+        'run' => (!is_writable(conf_path()) && !empty($_SESSION['apps_downloads']))?INSTALL_TASK_RUN_IF_NOT_COMPLETED:INSTALL_TASK_SKIP,
         'function' => 'apps_profile_authorize_transfer',
       ),
       'apps_profile_install_app_modules_' . $apps_server_name => array(
         'display' => FALSE,
         'type' => 'batch',
-        'run' => (isset($_SESSION['apps']))?INSTALL_TASK_RUN_IF_NOT_COMPLETED:INSTALL_TASK_SKIP,
+        'run' => (!empty($_SESSION['apps_downloads'])) ? INSTALL_TASK_RUN_IF_NOT_COMPLETED : INSTALL_TASK_SKIP,
         'function' => 'apps_profile_install_app_modules',
       ),
       'apps_profile_enable_app_modules_' . $apps_server_name => array(
         'display' => FALSE,
         'type' => 'batch',
-        'run' => (isset($_SESSION['apps']))?INSTALL_TASK_RUN_IF_NOT_COMPLETED:INSTALL_TASK_SKIP,
+        'run' => (!empty($_SESSION['apps'])) ? INSTALL_TASK_RUN_IF_NOT_COMPLETED : INSTALL_TASK_SKIP,
         'function' => 'apps_profile_enable_app_modules',
       ),
     );
@@ -146,6 +146,10 @@ function apps_profile_apps_select_form_submit($form, &$form_state) {
   $_SESSION['apps'] = array();
   if ($form_state['values']['op'] == t('Install Apps')) {
     $_SESSION['apps'] = array_filter($form_state['values']['apps']);
+    // Determine if any apps need to be downloaded.
+    apps_include('manifest');
+    $installed_apps = apps_apps($_SESSION['apps_server']['machine name'], array('installed' => TRUE), TRUE);
+    $_SESSION['apps_downloads'] = array_diff_key($_SESSION['apps'], $installed_apps) ? TRUE: FALSE;
     $_SESSION['apps_default_content'] = $form_state['values']['default_content'];
   }
 }
@@ -359,6 +363,7 @@ function apps_profile_enable_app_modules_finished($success, $results) {
   unset($_SESSION['apps_default_content']);
   unset($_SESSION['apps_server']);
   unset($_SESSION['apps_manifest']);
+  unset($_SESSION['apps_downloads']);
 }
 
 /**
@@ -407,4 +412,4 @@ function apps_profile_get_server_name($server) {
              ? $t('Install @name Apps', array('@name' => $server['title']))
              : $t('Install Apps');
 
-}
\ No newline at end of file
+}