While translating, I found this in trunk: #: ../thunar/thunar-dbus-service.c:729 Atleast one filename must be specified Should be "At least..."
#: ../plugins/thunar-uca/thunar-uca-editor.c:451 This page lists the conditions under which the\n action will appear in the file managers context\n menus. The file patterns are specified as a list\n of simple file patterns separated by semicolons\n (e.g. *.txt;*.doc). For an action to appear in the\n context menu of a file or folder, atleast one of\n these patterns must match the name of the file\n or folder. Additionally, you can specify that the\n action should only appear for certain kinds of\n files. Again, there is *at least* one space missing from this string :).
Was already fixed in dbus service, fixed uca in 9316fd3.