DoMacroSubstitute syntax was changed since IBO4.6A.
// IBO4.5B and older
procedure TIB_Dataset.DoMacroSubstitute;
// IBO4.5A and newer
function TIB_Dataset.DoMacroSubstitute( const ASQL: string ): string;

Probably there was a situation, when IBO sources is new and
compiled bpl-files is old. Try carefully deinstall IBObjects
(also remove "Documents and Settings\...\My Documents\Borland Studio
Projects\Bpl\IBO*.*") and install IBObjects again.

Then compile and install your component.

Ramil.

>
>
> I wrote a very simple component that inherits from the TIB_Connection
> class. After I install the component and restart Delphi I get the
> following error message.
>
> ---------------------------
> Borland Delphi 2005: bds.exe - Entry Point Not Found
> ---------------------------
> The procedure entry point
> @Ib_components@TIB_Dataset@DoMacroSubstitute$qqrv could not be located
> in the dynamic link library IBO40CRT_D2005.bpl.
> ---------------------------
>
> I searched for every IBO40CRT_D2005.bpl on the computer to make sure I
> only have the lates one on my computer. Any suggestion?
>
> Thanks, ERvin
>