FreePascal demo is not working

[yonist]

1. Missing StringBuilderUnit from the project
2. Missing CommentsBox from the lfm of uMainForm
3. After adding the missing ListBox I get an exception, I keep getting 'StackOverflow' Exception. No matter which file I parse.

[RomanYankovsky]

@Wosi can you please take a look?

[JulStrat]

Quick patch (FPC - 3.0.4, Lazarus - 2.0.6, OS - Vista 32bit)
File Demo - Parser - uMainForm.pas
Line 45:
//{$IFNDEF FPC}
{$R *.dfm}
//{$ELSE}
// {$R *.lfm}
//{$ENDIF}

Line 87:
StringStream: TMemoryStream; //TStringStream;

Line 110:
StringStream := TMemoryStream.Create; //TStringStream.Create;

UPDATE
Working Lazarus LFM file:
uMainForm.lfm.zip