I uninstalled v3 and reinstalled v2.7. Checked the right click context menus on folders and files and NOD32 antivirus system was reflected. Ran Secunia's psi and it showed that version 2.7 had some vulnerabilities so I downloaded and installed the 2.7 patch. After installation of the patch, NOD32 is no longer shows up on any context menu. How can I get the on-demand scanner back on the context menu? Any help will be greatly appreciated.