Download to flash memory icon not activated

Hello,

I use an STR7 Eval Board.

I've got a problem in microvision 3 because I 'm unable to download to flash memory my program because the icon is grayed and disabled.
But If I load an example from STLibrary, like UART project, I have the icon download enabled.
I try to find difference between my project and the UART project, but nothing (apparently) seems to be different...

Could you please tell me how can I do to download my program (I use ULINK)?

Thanks

Antoine