title: Scala REPL startup error "class file is broken"
body: <p>Every time after starting Scala 2.9.2 REPL (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0-ea) first line of code executing bring me an error:</p>
  
  <pre class="lang-none prettyprint-override"><code>scala&gt; 1 + 2
  error: error while loading CharSequence, class file '/usr/lib/jvm/java-8-oracle/jre/lib/rt.jar(java/lang/CharSequence.class)' is broken
  (bad constant pool tag 15 at byte 1484)
  </code></pre>
  
  <p>Later during further evaluation in current REPL instance no similar errors are occured. </p>
  
  <p>Has anyone any suggestion how to handle this behaviour?</p>