title: Weird xCode linker error I've never seen before saying "Assertion failed"
body: <p>Built this game through Unity, and managed to compile through xCode once before. Without any apparent changes, however, this error message turns up. I don't understand where to start looking for a fix, but maybe someone else have a clue? I've seen similar looking errors through searches, though the fixes seem arbitrary compared to mine.</p>
  
  <p>Anyone able to shed some light? Thank you!!</p>
  
  <p><code>0  0x1034de0e7  __assert_rtn + 144
  1  0x10351350c  archive::File&lt;arm&gt;::makeObjectFileForMember(archive::File&lt;arm&gt;::Entry const*) const + 1142
  2  0x103512c9a  archive::File&lt;arm&gt;::forEachAtom(ld::File::AtomHandler&amp;) const + 416
  3  0x10352a6a1  ld::tool::InputFiles::forEachInitialAtom(ld::File::AtomHandler&amp;, ld::Internal&amp;) + 465
  4  0x10353490e  ld::tool::Resolver::resolve() + 48
  5  0x1034dec47  main + 679
  A linker snapshot was created at:
      /tmp/wingOstar-2014-09-26-171939.ld-snapshot
  ld: Assertion failed: (memberIndex != 0), function makeObjectFileForMember, file /SourceCache/ld64/ld64-236.4/src/ld/parsers/archive_file.cpp, line 355.
  clang: error: linker command failed with exit code 1 (use -v to see invocation)</code></p>