title: IntelliJ IDEA 12.0 JVM Startup Error
body: <p>I just upgraded to <code>IntelliJ IDEA 12.0</code> and get an error immediately upon attempting to launch:</p>
  
  <pre><code>The JVM could not be started.  The maximum heap size (-Xmx) might be too large or 
  an antivirus or firewall tool could block the execution. 
  </code></pre>
  
  <p>I checked my <code>idea.exe.vmoptions</code> file and the maximum heap size is only 640m (I have 8 GB physical memory and am not running any other applications).  </p>
  
  <p><strong>idea.exe.vmoptions</strong></p>
  
  <pre><code>-Xms128m
  -Xmx640m
  -XX:MaxPermSize=640m
  -XX:ReservedCodeCacheSize=64m
  -XX:+UseCodeCacheFlushing
  -ea
  -Dsun.io.useCanonCaches=false
  </code></pre>
  
  <p>I still have <code>IntelliJ IDEA 11.4</code> on my machine and I am able to run that (using the same values for max heapsize in <code>idea.exe.vmoptions</code>).  Since <code>IntelliJ IDEA 11.4</code> runs, I don't believe it is an antivirus or firewall issue.  I have also checked those settings as well.</p>
  
  <p>Anyone run across this or have any idea (no pun intended)?  </p>