TYPO3 Core

When I set sys_language_overlay=hideNonTranslated I get the following expetion when I call the page in FE with GP:L > 0:

@Uncaught TYPO3 Exception
Passed variable is not an array or object, using empty array instead

InvalidArgumentException thrown in file
/htdocs/lib/typo3_src-6.2.0beta1/typo3/sysext/frontend/Classes/Aspect/FileMetadataOverlayAspect.php in line 56.

35 ArrayObject::exchangeArray(NULL)

/htdocs/lib/typo3_src-6.2.0beta1/typo3/sysext/frontend/Classes/Aspect/FileMetadataOverlayAspect.php:
00054: $this->getTsfe()->sys_language_contentOL
00055: );
00056: $data->exchangeArray($overlayedMetaData);
00057: }
00058:

34 TYPO3\CMS\Frontend\Aspect\FileMetadataOverlayAspect::languageAndWorkspaceOverlay(ArrayObject, "TYPO3\CMS\Core\Resource\Index\MetaDataRepository::recordPostRetrieval")
33 call_user_func_array(array, array)

/htdocs/lib/typo3_src-6.2.0beta1/typo3/sysext/extbase/Classes/SignalSlot/Dispatcher.php:
00148: }
00149:
00150: $slotReturn = call_user_func_array(array($object, $slotInformation['method']), $preparedSlotArguments);
00151:
00152: if ($slotReturn) {

32 TYPO3\CMS\Extbase\SignalSlot\Dispatcher::dispatch("TYPO3\CMS\Core\Resource\Index\MetaDataRepository", "recordPostRetrieval", array)

/htdocs/lib/typo3_src-6.2.0beta1/typo3/sysext/core/Classes/Resource/Index/MetaDataRepository.php:
00166: */
00167: protected function emitRecordPostRetrievalSignal(\ArrayObject $data) {
00168: $this->getSignalSlotDispatcher()->dispatch('TYPO3\\CMS\\Core\\Resource\\Index\\MetaDataRepository', 'recordPostRetrieval', array($data));
00169: }
00170:

31 TYPO3\CMS\Core\Resource\Index\MetaDataRepository::emitRecordPostRetrievalSignal(ArrayObject)

/htdocs/lib/typo3_src-6.2.0beta1/typo3/sysext/core/Classes/Resource/Index/MetaDataRepository.php:
00083:
00084: $passedData = new \ArrayObject($record);
00085: $this->emitRecordPostRetrievalSignal($passedData);
00086: return $passedData->getArrayCopy();
00087: }

30 TYPO3\CMS\Core\Resource\Index\MetaDataRepository::findByFileUid("72")@

This doesn’t happen with L=0 or sys_language_overlay=default