A permissions related bug is preventing the logging feature from working properly in the current version of Soundboard. Soundboard may be able to create a new log file, and will log the data as expected. However, this file is read-only. This means that Soundboard cannot write to it the next time you use the program.
The only workaround at this time is to either move the existing log file so that a new one can be created, or choose a new location for the log in Soundboard's preferences. We apologize for the inconvenience.