[HoSStiA]

Fix for 4.1.5:
1). Open Plugin Manager and search for BBCode [spoiler]: button
2). Click on edit and change the hook to editor_toolbar_start
3). Replace the Plugin PHP Code with a new content:

PHP Code:

if ($show['editor_toolbar'])
{
    $imgdir_editor = vB_Template_Runtime::fetchStyleVar('imgdir_editor');
        $vbulletin->bbcodecache[] = array(
        'buttonimage' => "$imgdir_editor/spoiler.gif",
        'twoparams' => 0,
        'bbcodetag' => 'spoiler',
        'tag' => 'Spoiler',
                'title' => 'Spoiler'
    );

    $vbulletin->bbcodecache[] = array(
        'buttonimage' => "$imgdir_editor/spoiler_a.gif",
        'twoparams' => 1,
        'bbcodetag' => 'spoiler',
        'tag' => 'Spoiler +',
                'title' => 'Spoiler +'
    );
}