Feature #5142 fix logic

main/document/slideshow.php

@@ -193,7 +193,9 @@ if ($slide_id == 'all') {
 	$directory_thumbnails=$sys_course_path.$_course['path'].'/document'.$folder.'.thumbs/';
 	
 	// Create the template_thumbnails folder (if no exist)
-	if (!$directory_thumbnails) {
+	
+	
+	if (!file_exists($directory_thumbnails)) {
 		@mkdir($directory_thumbnails, api_get_permissions_for_new_directories());
     }
 	

main/inc/lib/fckeditor/editor/plugins/ajaxfilemanager/_ajax_get_thumbnail_listing.php

@@ -76,7 +76,7 @@ foreach ($fileList as $file) {
 					
 					$directory_thumbnails=dirname($file['path']).'/.thumbs/';
 					
-					if (!$directory_thumbnails) {
+					if (!file_exists($directory_thumbnails)) {
 						@mkdir($directory_thumbnails, api_get_permissions_for_new_directories());
    				 	}