Funny characters were all over the place. By default, the app won't find/replace nuls by highlighting the character/s. You have to use a regular expression to make it work.
Select Replace (Ctrl/H)
Find what: \x00
Click on radio button Regular expression
Click on Replace All
This was from the Notepad++ list archive here. I don't know who the actual author of that email is, but thanks for the help.