fixed crash when clustering on an unsupported language. refs #479
fixed crash when clustering on an unsupported language. refs #479

beniz/seeks,Quix0r/seeks,Quix0r/seeks,Quix0r/seeks,beniz/seeks,beniz/seeks,Quix0r/seeks,beniz/seeks,beniz/seeks,Quix0r/seeks,Quix0r/seeks