Runtime error: The assembly mscorlib.dll was not found or could not be loaded
<Warning>: The assembly mscorlib.dll was not found or could not be loaded. <Warning>: It should have been installed in the `/Developer/MonoTouch/Source/monotouch/builds/install/target64/lib/mono/2.0/mscorlib.dll' directory. <Warning>: Service exited with abnormal code: 1
This issue occurs when the hidden
.monotouch-64 folders are missing from the
.xcarchive for signing / IPA creation, triggering the runtime error.