I'm used to doing this on an Avid, where they have an easy app installed - but what is up with FCP?

I'm trying to use Cinema Tools, but that doesn't seem to be working. (I'm on FCP 5.1.4, which has some CT capabilities built-in, or so they claim.)

When I try to export a CT film list for version 1, and then export a CT change list for version 2, FCP / CT doesn't let me select version 1's film list (nor XML, nor EDL) to compare it to (?!)

That is, when I try to use the workflow suggested in the FCP export menu (export a CT film list of version 1, then export a CT change list of version 2) - the FCP/CT change list dialog box then asks me "where is the program file for the previous version of this sequence?" --

but then it grays out the film list of version 1 (?)

So what else could it mean or be looking for when it asks for a 'program file'?

I also tried the online app Editrace, but that wouldn't accept my exports either (?)

Work flow clues?

I would be very grateful...