Open the Main window.
(click on the tray icon or from Windows' start menu choose "Programs > StarReminder > StarReminder")
From the menu choose "Help > Preferences". On the dialog select the "System" tab and click on the "[ ] Enable Log" option.
From now on the software's activity is recorded inside the LOG file. When the problem occurs close StarReminder and attach the LOG file "StarReminder.log", located in your desktop, in an e-mail and send it to email@example.com.