title: Rails4 - ERROR Errno::EINVAL: Invalid argument @ rb_sysopen - path/path/path
body: <p><br> Hello, after running bundle install (or update) today (27-Aug-2015) I received this error:</p>
  
  <pre><code>ERROR Errno::EINVAL: Invalid argument @ rb_sysopen - C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/app/assets/images/cp-points-icon.ico
  </code></pre>
  
  <p>As you can see, the path "C:/_Daten" is repeated 5 times. <br>
  I cannot imagine why and where it happens.<br>
  My _form.haml.html looks like this:</p>
  
  <pre><code>&lt;%= image_tag 'cp-logo.png', class: "logo", style: "height:18px; width:auto; " %&gt;
  </code></pre>
  
  <p>This happens on my Windows 10 development environment.<br>
  My Ubunt15.04 development environment is showing the icons and pictures quite correct.<br>
  And now checked on my Win7 development environment. That is bringing up the same issue.<br>
  <br>
  Issue is: for all pics and icons and glyphicons the path is being inserted more than one time. <br>
  This is my code for showing glyphicons:</p>
  
  <pre><code>&lt;i class="glyphicon glyphicon-home"&gt; Home&lt;/i&gt;
  </code></pre>
  
  <p><br>
  And the error is like this:<br></p>
  
  <pre><code>ERROR Errno::EINVAL: Invalid argument @ rb_sysopen - C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/C:/_Daten/Ruby/ai/C:/Ruby21/lib/ruby/gems/2.1.0/gems/bootstrap-sass-3.3.4.1/assets/fonts/bootstrap/glyphicons-halflings-regular.woff
  </code></pre>
  
  <p>So my question now is: how can I take control of the path for the glyphicon-file.<br>
  Any help from anyone?<br>
  Thanks.</p>