Is it possible for you to share the error part of log so that Motorola folks can help you further.
In the mean time, you can also try to use the master branch of Rhodes framework (https://github.com/rhomobile/rhodes) which may have not this problem. (Note: I have not tested it).
I get the error message below when I add armv7s to "Release" and then run "Archiv". See attached screenshot:
Undefined symbols for architecture armv7s:
"_OBJC_CLASS_$_RhodesBaseDelegate", referenced from:
_OBJC_CLASS_$_CApplicationDelegate in CApplicationDelegate.o
"_OBJC_METACLASS_$_RhodesBaseDelegate", referenced from:
_OBJC_METACLASS_$_CApplicationDelegate in CApplicationDelegate.o
ld: symbol(s) not found for architecture armv7s
clang: error: linker command failed with exit code 1 (use -v to see invocation)
This is dirty trick but please give it a shot.
Try Clean -> Archive
If not try to set to Debug instead of Release, then clean-> archive.