Reachability duplicate symbol - objective-c

Error on link:
ld: duplicate symbol _OBJC_METACLASS_$_Reachability in /Users/jmf/Documents/iOS Development/jmf_Client/jmf/jmf/ww_libs/libmfcbroem_ios.a(Reachability.o) and /Users/tpf/Library/Developer/Xcode/DerivedData/jmf-erlknghfcpoomnfanzovahfacgpv/Build/Intermediates/jmf.build/Debug-iphoneos/jmf.build/Objects-normal/armv7/Reachability.o for architecture armv7
If I simply remove the h/m files (and associated import directives) in hopes of just using the Reachability in libmfcbroem_ios.a...the linker throws this:
Undefined symbols for architecture armv7:
"_kReachabilityChangedNotification", referenced from:
-[MKNetworkEngine initWithHostName:customHeaderFields:] in MKNetworkEngine.o
-[MKNetworkEngine dealloc] in MKNetworkEngine.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)
How can I tell the linker to utilize Reachability from the "a" file?
(disclaimer, I'm just getting started with ObjC/iOS)
Thanks for any help...

Remove the Reachability.m file, include only the header

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Undefined symbols for architecture armv7:
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See Images for Error(s), Sorry I could post picture directly. Not enough reputation:
Error (1)
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