title: Installing RcppArmadillo in R
body: <p>i'm having this error when trying to install <code>RcppArmadillo</code> in R, and is driving me crazy, i've not been able to find how to deal with it:</p>
  
  <pre><code>Error: package or namespace load failed for ‘RcppArmadillo’ in dyn.load(file, DLLpath = DLLpath, ...):
   unable to load shared object '/Users/Ghost/Rlibs/00LOCK-RcppArmadillo/00new/RcppArmadillo/libs/RcppArmadillo.so':
    dlopen(/Users/Ghost/Rlibs/00LOCK-RcppArmadillo/00new/RcppArmadillo/libs/RcppArmadillo.so, 6): Symbol not found: _wrapper2_ddot_
    Referenced from: /Users/Ghost/Rlibs/00LOCK-RcppArmadillo/00new/RcppArmadillo/libs/RcppArmadillo.so
    Expected in: flat namespace
   in /Users/Ghost/Rlibs/00LOCK-RcppArmadillo/00new/RcppArmadillo/libs/RcppArmadillo.so
  Error: loading failed
  </code></pre>
  
  <p>Any insights/advice on how to fix it?</p>