Is there are particular reason you don't want to fully upgrade to 3.x.x?
– DasonAug 24 '14 at 12:36
missing packages and code compatibility ( see http://stackoverflow.com/questions/16812528/filled-contour-in-r-3-0-x-throws-error ). Its a production machine so change is not good.
– ECIIAug 24 '14 at 12:52