Running node cause error during update

[Skriptach]

When run new version installer current running processes are not quit automatically. And even after selecting "Quit" in tray menu they still running. That compels to shut down those processes manually from system manager.

Steps to reproduce the behavior:

1. Install and run latest Gladius Node [0.7.2 at the moment]
2. Click on 'Quit' in tray menu
3. Run installer again to emulate update
4. See error

Expected behavior
Installer automatically quit all related processes.
Or at least ask to quit and "Quit" means really quit.

Screenshots

Desktop (please complete the following information):

• OS: Windows 7 x64 SP2