rpy bug in 3.4

[Flavio Coelho]

Hi, I just upgraded to 3.4 via sage -upgrade

I wanted to recommend Sage to colleagues which use R, since R doesn't
have any thing like the sage Notebook.
However after starting a new worksheet and setting the sage notebook
to evaluate all cells as R (via pull-down menu) I got the following
error:

library(sp)

Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/home/fccoelho/.sage/sage_notebook/worksheets/admin/5/code/
2.py", line 6, in <module>
print _support_.syseval(r, ur'''library(sp)''', '/home/
fccoelho/.sage/sage_notebook/worksheets/admin/5/cells/0')
File "/home/fccoelho/Downloads/sage-3.3/local/lib/python2.5/site-
packages/sage/server/support.py", line 353, in syseval
return system.eval(cmd, sage_globals, locals = sage_globals)
File "/home/fccoelho/Downloads/sage-3.3/local/lib/python2.5/site-
packages/sage/interfaces/r.py", line 982, in eval
ret = Expect.eval(self, code, synchronize=True, *args,**kwds)
TypeError: eval() got multiple values for keyword argument
'synchronize'

This seem like a sage bug, am I right?