Custom Install Options Page: don'nt exit installer

Hello,
I Have a litle problem.
I'am doing an Oracle 8i client installation with only the dll's that i use from it, and in the installer i call to an io dialog to configure the tsnnames.ora to configure the database connection, but when i exit from the io dialog and i have done the checks and run all that i must run... it does not exits the installer... and it has terminated and i put then an "quit" function call!!!
thank you
ups, i attach the installer script with the folder tree that i use.
see you

hello again,
thank you for all, i took another way
i change the pages order to ...

!insertmacro MUI_PAGECOMMAND_WELCOME
!insertmacro MUI_PAGECOMMAND_DIRECTORY
!insertmacro MUI_PAGECOMMAND_INSTFILES
   Page custom CPOraTNS    "Configuración Oracle 8i Cliente"
!insertmacro MUI_PAGECOMMAND_FINISH 

and it works, but the other case... is a problem?
Saluti per tutti

You are not supposed to show InstallOptions pages from a section, only custom Page's functions. That's why it didn't work.