Achim, The upcoming release of Biber requires Unicode-Normalize-1.26, but we currently have 1.25. I know this module is now bundled with perl. Would it be difficult for you to update it? Thanks. Ken BKCBØ[H\ÜÎËØÞYÝÚ[ÛÛKÜØ[\Ë[BTNËØÞYÝÚ[ÛÛKÙ\KÃBØÝ[Y[][ÛËØÞYÝÚ[ÛÛKÙØÜË[B[ÝXØÜXH[ÎËØÞYÝÚ[ÛÛKÛ[ÈÝ[ÝXØÜXK\Ú[\CBB