[otrs] RichTextEditor stopped working after upgrade to 3.1.7

Hi all, I think I need your urgent help here. I just upgraded from 3.1.1 to 3.1.7 and my RichTextEditorTweaks package stopped working. I tried re-uploading and re-installing but it just won't show up when I go to create a new email. Appreciate your quick support on this. Thanks //M