Forte stores a log of useful information in a text file call FORTE.LOG.  FORTE.LOG is located in the user's application data folder.  This folder has been located in different places in different versions of Windows.  As of Windows 7, it is in the C:\Users\<username>\AppData\Roaming\brainspawn\forte 4 folder.  A handy way to access this folder is to start Forte and select the menu command "Tools|View INI Files and application data folder" which opens the folder for easy access.