Good evening.

I will greatly appreciate if somebody could help me with this.

The Delphi 5 source code:

procedure T_main.LoadForm( FormClass: TFormClass; FormName: String; Splash: Boolean );
var
ChildForm : TForm;
nReturn : Integer;
begin
bReturnFromSub := True;
ChildForm := FormClass.Create( self );
nReturn := ChildForm.ShowModal;
ChildForm.Free;
Repaint;
if ( nReturn = 3 ) then Logout1Click( Nil );
end;

Procedure is called by LoadForm(T_Rooms,'_Rooms', False );


The call ShowModal throws the error ibxeUnknown.

Only one out of 11 calls in my database application misbehaves and I simply have
run out of ideas of how to handle this.
server is Firebird 2.5.2 on Win7 / 64 , the application runs on WinXP Pro SP3.

Thanks for reading this

Regards
Wolfgang Kluge