IPython Rmagic error

In [6]:

%R plot(X, Y)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-6-b7a80db7b68d> in <module>()
----> 1 get_ipython().magic(u'R plot(X, Y)')

/Applications/anaconda/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in magic(self, arg_s)
   2134         magic_name, _, magic_arg_s = arg_s.partition(' ')
   2135         magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
-> 2136         return self.run_line_magic(magic_name, magic_arg_s)
   2137
   2138     #-------------------------------------------------------------------------

/Applications/anaconda/lib/python2.7/site-packages/IPython/core/interactiveshell.pyc in run_line_magic(self, magic_name, line)
   2060                 args.append(sys._getframe(stack_depth).f_locals)
   2061             with self.builtin_trap:
-> 2062                 result = fn(*args)
   2063             return result
   2064

/Users/nitin/.ipython/extensions/rmagic.py in R(self, line, cell, local_ns)

/Applications/anaconda/lib/python2.7/site-packages/IPython/core/magic.pyc in <lambda>(f, *a, **k)
    189     # but it's overkill for just that one bit of state.
    190     def magic_deco(arg):
--> 191         call = lambda f, *a, **k: f(*a, **k)
    192
    193         if callable(arg):

/Users/nitin/.ipython/extensions/rmagic.py in R(self, line, cell, local_ns)
    494             line_mode = False
    495
--> 496         code = ' '.join(args.code) + code
    497
    498         # if there is no local namespace then default to an empty dict

TypeError: coercing to Unicode: need string or buffer, dict found