title: Omnet++ 5.1 preview 2 Error
body: <p>I have installed (without any error) OMNeT++ version 5.1 preview 2 on Windows 10.</p>
  
  <p>I don't know where is the problem but I cannot run any simulation. I tried the tictoc example. I built it and the run it, this is the output from the console:</p>
  
  <pre><code>Starting...
  
  $ cd C:/omnetpp-5.1pre2/samples/tictoc
  $ tictoc.exe -m -u Qtenv omnetpp.ini
  
  Simulation terminated with exit code: -1073741511
  Working directory: C:/omnetpp-5.1pre2/samples/tictoc
  Command line: tictoc.exe -m -u Qtenv omnetpp.ini
  
  Environment variables:
  PATH=;C:\omnetpp-5.1pre2\bin;C:\omnetpp-5.1pre2\tools\win64\usr\bin;C:\omnetpp-5.1pre2\tools\win64\mingw64\bin;C:/omnetpp-5.1pre2/ide/jre/bin/server;C:/omnetpp-5.1pre2/ide/jre/bin;C:/omnetpp-5.1pre2/ide/jre/lib/amd64;.;C:\omnetpp-5.1pre2\bin;C:\omnetpp-5.1pre2\tools\win64\mingw64\bin;C:\omnetpp-5.1pre2\tools\win64\usr\local\bin;C:\omnetpp-5.1pre2\tools\win64\usr\bin;C:\omnetpp-5.1pre2\tools\win64\usr\bin;C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\omnetpp-5.1pre2\tools\win64\usr\bin\site_perl;C:\omnetpp-5.1pre2\tools\win64\usr\bin\vendor_perl;C:\omnetpp-5.1pre2\tools\win64\usr\bin\core_perl;C:\omnetpp-5.1pre2;
  OMNETPP_ROOT=C:/omnetpp-5.1pre2/
  OMNETPP_IMAGE_PATH=C:\omnetpp-5.1pre2\images
  </code></pre>
  
  <p>The same happens with every other example.</p>
  
  <p>What is the problem?</p>