Index: typo3/sysext/cms/tslib/class.tslib_pibase.php
===================================================================
--- typo3/sysext/cms/tslib/class.tslib_pibase.php	(revision 3416)
+++ typo3/sysext/cms/tslib/class.tslib_pibase.php	(working copy)
@@ -504,7 +504,7 @@
 		</div>';
 
 			// now overwrite all entries in $wrapper which are also in $wrapArr
-		$wrapper = array_merge($wrapper,$wrapArr);
+		$wrapper = array_merge($wrapper,(array)$wrapArr);
 
 		if ($showResultCount != 2) { //show pagebrowser
 			if ($pagefloat > -1) {