title: Issues with bind_rows() from dplyr - package loading error?
body: <p>I'm trying to use the bind_rows() function from dplyr (ver 0.4.1), but R command line can't find the function. It can find the help for the function, but any efforts to use the function are met with </p>
  
  <pre><code>&gt; bind_rows()
  Error: could not find function "bind_rows"
  </code></pre>
  
  <p>Am I doing something wrong? I understand bind_rows() was only introduced in ver 0.4.0, but I have a newer version than that.</p>
  
  <p>Here is my sessionInfo()</p>
  
  <pre><code>&gt; R version 3.1.1 (2014-07-10)
  &gt; Platform: x86_64-apple-darwin13.1.0 (64-bit)
  &gt; 
  &gt; locale:
  &gt; [1] en_GB.UTF-8/en_GB.UTF-8/en_GB.UTF-8/C/en_GB.UTF-8/en_GB.UTF-8
  &gt;
  &gt; attached base packages:
  &gt; [1] utils     datasets  graphics  grDevices stats     methods   base     
  &gt;
  &gt; other attached packages:
  &gt; [1] lubridate_1.3.3 tidyr_0.2.0     dplyr_0.4.1     swirl_2.2.16    mvoutlier_2.0.5 sgeostat_1.0-25
  &gt;
  &gt;loaded via a namespace (and not attached):
  &gt; [1] assertthat_0.1        colorspace_1.2-4      DEoptimR_1.0-1        digest_0.6.4          GGally_0.4.8         
  &gt; [6] ggplot2_1.0.0         grid_3.1.1            gtable_0.1.2          httr_0.5              magrittr_1.0.1       
  &gt;[11] MASS_7.3-34           memoise_0.2.1         munsell_0.4.2         mvtnorm_1.0-0         parallel_3.1.1       
  &gt;[16] pcaPP_1.9-49          pls_2.4-3             plyr_1.8.1            proto_0.3-10          Rcpp_0.11.2          
  &gt;[21] RCurl_1.95-4.3        reshape_0.8.5         reshape2_1.4          robCompositions_1.9.0 robustbase_0.91-1    
  &gt;[26] rrcov_1.3-4           scales_0.2.4          stats4_3.1.1          stringr_0.6.2         tcltk_3.1.1          
  &gt;[31] testthat_0.8.1        tools_3.1.1           yaml_2.1.13      
  </code></pre>