rename form1

Hi, i wrote an application using vc++ express beta, now I try to rename the form1 in form_main. no problem !
I'm adding a ImageList and execute the programme :
Error :

An unhandled exception of type 'System.Resources.MissingManifestResourceException' occurred in mscorlib.dll

Additional information: Could not find any resources appropriate for the specified culture or the neutral culture. Make sure "test1.f_main.resources" was correctly embedded or linked into assembly "test1" at compile time, or that all the satellite assemblies required are loadable and fully signed.

If I not rename the form all is done !

Help me to rename my FORM !

Thanks

[865 byte] By [remy_tache] at [2008-2-20]