System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> Zilf.Interpreter.Values.WrappedMacroResultException: Macro result was not unwrapped before usage

Stack Trace: 
ZilMacroResult.GetTypeAtom(Context ctx) line 88
ZilObject.Eval(Context ctx, LocalEnvironment environment) line 233
ZilObject.ExpandOrEvalWithSplice(Context ctx, ZilObject obj, LocalEnvironment environment) line 352
<>c__DisplayClass30_0.<EvalSequence>b__0(ZilObject zo) line 374
SelectManySingleSelectorIterator`2.MoveNext()
ZilSubr.Apply(Context ctx, ZilObject[] args) line 64
ZilForm.EvalImpl(Context ctx, LocalEnvironment environment, ZilAtom originalType) line 143
ZilObject.Eval(Context ctx, LocalEnvironment environment) line 243
ZBuiltins.TableOp(ValueCall c, ZilObject[] args) line 2083
RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)
--- End of inner exception stack trace ---
MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)
RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
MethodBase.Invoke(Object obj, Object[] parameters)
ZBuiltins.CompileBuiltinCall[TCall](String name, Compilation cc, IRoutineBuilder rb, ZilListoidBase form, TCall call) line 325
ZBuiltins.CompileValueCall(String name, Compilation cc, IRoutineBuilder rb, ZilForm form, IVariable resultStorage) line 338
Compilation.CompileForm(IRoutineBuilder rb, ZilForm form, Boolean wantResult, IVariable resultStorage) line 83
Compilation.CompileAsOperand(IRoutineBuilder rb, ZilObject expr, ISourceLine src, IVariable suggestion) line 214
ZBuiltins.SetValueOp(ValueCall c, IVariable dest, ZilObject value) line 1188
RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
MethodInvoker.Invoke(Object obj, IntPtr* args, BindingFlags invokeAttr)

By the time ZBuiltins.TableOp calls c.form.Eval(), c.form contains a ZilMacroResult obtained by expanding the macro, but the value returned by the macro hasn’t been unwrapped.