Use 3.2.0 or trunk (full program):
{$mode delphi}{$H+}
uses classes, sysutils;
var
frDict:TStrings;
begin
frDict := TStringList.Create();
frDict.LoadFromFile('enwiki-latest-all-titles-in-ns0', TEncoding.UTF8);
frDict.Free;
end.
Works like a charm... 3.0.4 is now eol. You are using a feature - TEncoding - that is not in 3.0.4....