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-rw-r--r--program/include/rcube_plugin_api.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/program/include/rcube_plugin_api.php b/program/include/rcube_plugin_api.php
index cfba7fa78..0e38a3101 100644
--- a/program/include/rcube_plugin_api.php
+++ b/program/include/rcube_plugin_api.php
@@ -176,7 +176,7 @@ class rcube_plugin_api
if (is_subclass_of($plugin, 'rcube_plugin')) {
// ... task, request type and framed mode
if ((!$plugin->task || preg_match('/^('.$plugin->task.')$/i', $rcmail->task))
- && (!$plugin->noajax || is_a($rcmail->output, 'rcube_template'))
+ && (!$plugin->noajax || (is_object($rcmail->output) && is_a($rcmail->output, 'rcube_template')))
&& (!$plugin->noframe || empty($_REQUEST['_framed']))
) {
$plugin->init();