Qorus logs events and exceptions in two different places. They can be viewed or analysed in two different places, one being more accessible than the others depending on what user rights the user has.
The first place is on the user machine where the Qorus add-in is installed and used. It can be viewed in the Event viewer - Windows logs - Application.
The second place is on the SharePoint sever that Qorus is hosted on. It can be viewed in the Event viewer - Windows logs - Application.
The third location being; a folder in the Qorus directory on the SharePoint Server which can be found at: \Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\LOGS