If you have not been able to update to 0.9.2 from within SleepyHead, delete the following files and folders:
all instances of the SleepyHead program on your computer
the SleepyHeadData and SleepApp folders
~/Library/Preferences/com.jedimark.SleepyHead.plist
~/Library/Preferences/com.jedimark.SleepyHead.plist.lockfile
~/Library/Preferences/com.yourcompany.SleepyHead.plist
~/Library/Preferences/com.yourcompany.SleepyHead.plist.lockfile
~/Library/Caches/com.yourcompany.SleepyHead
~/Library/Saved Application State/com.yourcompany.SleepyHead.savedState
It might also be a good idea to get EasyFind from the Apple App Store (free), search for any other files and folders with "SleepyHead" in their names, and delete those, too.
AFTER YOU HAVE DELETED ALL THE FILES AND FOLDERS LISTED ABOVE, download the full DMG package for 0.9.2 from SourceForge, available here:
https://sourceforge.net/projects/sleepy ... %20Builds/
Double-click on the DMG file, double-click on the volume created on your Desktop, double-click on the full package installer, install SleepyHead in the default /Applications folder, start SleepyHead, create a new profile, close and restart SleepyHead, and import your data from backup.