Rのinstall.packagesでimage not foundエラーが出る

dlopen(/Library/Frameworks/R.framework/Versions/3.1/Resources/library/tcltk/libs/tcltk.so, 10): Library not loaded: /usr/local/lib/libtcl8.6.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.1/Resources/library/tcltk/libs/tcltk.so

というエラーが出る。

以下を実行
http://stackoverflow.com/questions/18550971/tcltk-library-issue-while-install-rcmdr-package-on-macbookpro

brew remove tcl-tk
brew -v install tcl-tk --with-tk