Phonegap no architecture issue when build

I am new to iPhone development and I use Phonegap since I know web development. I followed instruction in below sites: http://wiki.phonegap.com/w/page/16494778/Getting-Started-with-PhoneGap-%28iOS%29 https://github.c开发者_开发百科om/phonegap/phonegap-iphone/blob/master/README.md

But I got this error

No architectures to compile for (ARCHS=i386 ppc, VALID_ARCHS=armv6 armv7).

I already went to Project Setting and changed Base SDK to iPhone Device 3.1.3 but the problem is still there.

Any advice?

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set the "valid archictectures" in Project Info

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Had the same prob. If testing in the simulator: Click top left where you can choose the simulator and check if the top item "Device" is checked. If yes ckeck "Simulator" and try again.