**New Installer

[JRD!]

Originally Posted by ShadowEagle

No, i only want to remove that the app folder will be deleted if a isdone error will happen.

Did you try to modify the code in the UltraArc module in the section CurStepChanged ?

procedure CurStepChanged(CurStep: TSetupStep);
begin
   if (CurStep = ssInstall) and FileExists(ExpandConstant('{src}\records.ini')) then
     UltraARC_Process;

   if (CurStep=ssPostInstall) and ISDoneError then begin
      MemoIsdoneList.clear;
       MemoExecute:='Scanning files...' + #13#10 +
       'Rolling back changes...' + #13#10 +
        'Error!';
          MemoIsdoneList.Lines.Add(MemoExecute);
         UnBtn.Enabled:=False;
//        Exec2(ExpandConstant('{uninstallexe}'), '/VERYSILENT', false);
//      DelTree(ExpandConstant('{app}'), True, True, True);
   end;
end;

[rinaldo]

just create a .ini file and tell him what to delete and what not

or
ex:

[UninstallDelete]
Type: files; Name: {app}\bla
Type: filesandordirs; Name: {app}\bla bla 
Type: dirifempty;     Name: {app}\bla bla bla