title: Activator `.sbt.ivy.lock` is not available
body: <p>I am trying to generate Eclipse and IDEA projects for a play project using activator. When I tried doing this, it does a little, but then it hangs at:</p>
  
  <p><code>Waiting for lock on C:\Users\James\.ivy2\.sbt.ivy.lock to be available...</code></p>
  
  <p>At first I thought my running session of Intellij IDEA may be conflicting, I killed IDEA and the issue persisted. I closed activator, deleted the lock file, and restarted activator, but then it recreated the lock file and gave me the same issue. This is the full log I have been getting.</p>
  
  <pre><code>[info] Loading project definition from C:\Users\James\play-java\project
  [info] Set current project to play-java (in build file:/C:/Users/James/play-java/)
  [info] Applying State transformations com.typesafe.sbtrc.SetupSbtChild from C:/Users/James/.sbt/boot/scala-2.10.2/com.typesafe.sbtrc/sbt-rc-probe-0-13/1.0-1a8f7afd5ba98b45834ff53dd349130c3ade22f1/sbt-rc-probe-0-13-1.0-1a8f7afd5ba98b45834ff53dd349130c3ade22f1.jar;C:/Users/James/.sbt/boot/scala-2.10.2/com.typesafe.sbtrc/sbt-rc-probe-0-13/1.0-1a8f7afd5ba98b45834ff53dd349130c3ade22f1/sbt-rc-props-1.0-1a8f7afd5ba98b45834ff53dd349130c3ade22f1.jar
  [info] Updating {file:/C:/Users/James/play-java/}root...
  Waiting for lock on C:\Users\James\.ivy2\.sbt.ivy.lock to be available...
  </code></pre>
  
  <p>How can I fix the lockfile issue?</p>