from todays update: ... [13/22, 04:19/06:57] update: texworks [6775k] (21873 -> 22331) ... do_postaction: don't know how to do appreg prog="texworks.exe" cmd='"TEXDIR/bin/win32/texworks.exe" "%1"' exts='.tex|.sty|.cls' done ... is it the default behaviour on a Linux machine? Herbert