Abbrevia package for Compression

[Maverich]

after download Abbrevia5, for a Test

uses
  Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls,
  AbZipper, AbZipTyp, AbUtils;

when execute Build, return an Error

unit AbCharSet line 45 line 5 -> Fatal internal Error 200501152
... the directive

12345   
{$IF N

{ Unicode backwards compatibility types }
{$IF NOT DECLARED(RawByteString)}       

i use Lazarus 1.1 revision SVN 37429 on Win7