In the rare situation that Fade In has trouble starting up (such as a crash, etc.) it may be necessary to delete the application's saved preferences.
This solution to startup problems should probably be attempted only after other solutions have not worked, as it will require re-entering any registation information, as well as window layout and any other customized setup made under Preferences.
Mac OS X
From Finder, click the Go menu, hold down the Option key and select Library. Once Finder shows the Library contents, double-click on the Preferences folder. Find the file com.generalcoffee.fadein.plist and move it to the Trash.
(For Mac App Store users, the Fade In .plist file can be found in ~/Library/Containers/com.generalcoffee.fadein/Data/Library/Preferences.)
Remove the hidden dot file ~/.Fade In in your home directory by typing either of:
rm ~/".Fade In" or rm ~/Fade\ In
Please note: Changes made to the Windows registry happen immediately, and no backup is automatically made. Do not edit the Windows registry unless you are confident about doing so. Microsoft has issued the following warning with respect to the Registry Editor: "Using Registry Editor incorrectly can cause serious, system-wide problems that may require you to re-install Windows to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk."
Start the Registry editor by typing Win+R and entering "regedit". You can also search for regedit.exe from the Start menu's program search field.
Navigate to HKEY_CURRENT_USER\Software\General Coffee Co.\Fade In.
To make an optional backup of the Fade In configuration, right-click on the Fade In key (folder icon) and select Export.
Then, to delete the Fade In configuration, right-click on the Fade In key, ensure that the status bar shows HKEY_CURRENT_USER\Software\General Coffee Co.\Fade In, and select Delete.