The "Database" subdirectory inside your ClipboardHelpAndSpell directory.
This will either be in the installation directory if you are running portably or on Windows XP.
On Windows 7/8 it will be under MyDocuments\DonationCoder\ClipboardHelpAndSpell.
I am back in business.
I'm running WinXP so I found the folder in my programs folder.
After I deleted the database files and started the program it's running fine again.
I noticed that a couple of the files in the database folder have a .dat suffix.
I believe this is where the problem started.
A couple of days ago I was having problems with a password program.
I noticed that the password database file had been taken over by another program!
So I changed back the program that controls .dat files to the Password program.
I believe this was my mistake.
In doing so, I think the program took over ALL .dat files.
So when CH&S needed its .dat files they weren't available to it.
That's my theory, and I think that's what happened.
So I went into Total Commander and released all .dat files. Now no single program controls all of the .dat files.