New to ios development, problems building

Hey everyone,

I’m tryng to get unity iphone running, but i’m having a problem here.
I already installed the certificates, and got unity compiling and opening xcode.
Now on xcode, i’m stuck.
It’s failing with 1 error that says
“Checking dependencies”
"No architectures to compile for (ARCHS=armv6, VALID_ARCHS=i386 ppc ppc64 ppc7400 ppc970 x86_64).
“Build failed (1 error”

What is this ?
Anyone has a clue on what am I doing wrong ?

thanks,
Bruno

anyone ?