Actually you're really close for how you tried going about it. What I would recommend instead is that you have a whole seperate folder outside of your OFP folder to put the dePBO'd data into.
First off, iirc no official distribution of WRPtool was ever zipped. It's only come as .rar files. If you downloaded a zip file, or used some flakey extractor, it could have clobbered the subdirs. Or you could have the option to preserve folder structure turned off.
Anyway, when you use Amfali's decypt to explode the PBO's, you'll have a new sub-folder next to the original PBO. For example, (in your case) if you extract
C:Program FilesCodemastersOperationFlashpointDTAdata.pbo
you should have a new
C:Program FilesCodemastersOperationFlashpointDTAdata
folder, with the contents of the data.pbo in it.
Create a new folder, like c:ofpbase, and move all those depbo'd folders into it, so you have stuff like
- c:ofpbasedata
- c:ofpbaseabel
- c:ofpbaselandtext
- c:ofpbaseO
- etc
Now in WRPtool, correct your settings to "c:ofpbase" and you should be good to go, after you get WRPtool reinstalled with the proper folder structure.