I have posted a new release of WCopyfind: Version 4.1.0.
This new version of WCopyfind separates the windows-based user interface from the actual document loading and comparison process. The latter process is almost machine independent, although it still contains some windows-specific code.
Separating out the loading and comparison process allowed me to eliminate a number of lingering bugs that were present in the older versions of WCopyfind. It also allowed me to produce a scriptable, command-line version of the comparison program: Copyfind.4.1.0. I will post Copyfind.4.1.0 shortly.