title: Install5j issue with concurrency installation of .exe
body: <p>I had an issue with concurrency installation of 2 applications.
  Using install4j5 created two separate .exe files (ONE.exe and TWO.exe.)</p>
  
  <p>After installing ONE.exe (Not running) if I installed TWO.exe, the ONE application is getting uninstalled.
  But if I tried to install TOW.exe while ONE is running, it is allowing to install both applications.</p>
  
  <p>Is there any way to make the concurrent install when the other application is not running?</p>