Two resource files with ICON in second file causes CVT1100 error

[Danny Pressley]

Create a VS.NET 2003 MFC Project as basic MDI application configuartion, do a
build all and all is well, add a project new item for a Resource File (.rc)
named MySecondResourceFile, do a build all and all is well, add an ICON to
the MySecondResourceFile, just save the blank icon image as is, do a build
all and you get this error:

fatal error CVT1100: duplicate resource. type:ICON, name:1, language:0x0409

But the resource ID is unique and only located in the new Resource1.h and
MySecondResourceFile.rc files. Any ideas why this error is occuring?

Thanks for any input,
Danny Pressley