Why Can't I Load rJava in RStudio After My Yosemite Upgrade?

rJava Load Error in RStudio/R After Yosemite Upgrade

Users who upgraded their Mac operating system to Yosemite from Mountain Lion and their R version to 3.2 may encounter issues when attempting to load rJava in RStudio or R.

Upon upgrade, users may encounter a pop-up message prompting them to install Java 6. Additionally, loading rJava or dependent packages may result in RStudio crashing or the following error message:

Error : .onLoad failed in loadNamespace() for 'rJava', details:
  call: dyn.load(file, DLLpath = DLLpath, ...)
  error: unable to load shared object '/Library/Frameworks/R.framework/Versions/3.2/Resources/library/rJava/libs/rJava.so':
  dlopen(/Library/Frameworks/R.framework/Versions/3.2/Resources/library/rJava/libs/rJava.so, 6): Library not loaded: @rpath/libjvm.dylib
  Referenced from: /Library/Frameworks/R.framework/Versions/3.2/Resources/library/rJava/libs/rJava.so
  Reason: image not found
Error: package or namespace load failed for ‘rJava’

Solution

To address this issue, users can create a symbolic link between libjvm.dylib and /usr/local/lib:

sudo ln -f -s $(/usr/libexec/java_home)/jre/lib/server/libjvm.dylib /usr/local/lib

The -f flag forces overwriting any existing file or link. With the link established, users can successfully start RStudio without needing command line arguments and without experiencing the libjvm.dylib loading error.

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