Known bugs and specific changes are in the on-line help file "Change log" section. You must install the online help file along with the executable. You must also install the DLL in the same folder as the executable. NOTE: Depending on how you obtained the help file SedAnal.chm, and your Internet settings, the help file may need to be "unblocked". You can view help by double-clicking SedAnal.chm in Windows Explorer, without needing to install SedAnal. If you see the topics in the left panel, but the topics appear blank, or you get an error message, unblocking is necessary. In Windows XP, unblock a file by right-clicking in Windows Explorer, choose Properties, and click Unblock.