1. On your Windows machine where you use Infrastructure Manager(IM) open registry editor(using 'regedit' command)
2. Browse to following key:
HKEY_CURRENT_USER\Software\Nimbus Software\NimBUS Manager\Options
3. Change "LogLevel" value to 5
4. Exit registry editor
5. Now, in Infrastructure Manager, click View->Message Window
6. Now in message window in Infrastructure Manager, right click and select Show Trace
7. Right click again un-check Hide Events
8. The following log files will be created under $Nimsoft\AC\logs\
nimbus_manager.log, _nimbus_manager.log