Panther add ons?

Does any one know what the panther add ons might be in the recovery partition.  My recovery partition was lost, and I recently managed to rebuilt most of it myself, but with a reset, I always get the "Failed to apply the Panther Add on files/directories" (something like that) error in the logs file.  I noticed it looks for a panther directory, along with some add ons, might be a .wim file or another directory.

Also, could anyone could give me a list of the names of all the files that are in their recovery partition?  I know the original recovery files are not that important, however; I prefer customizing it, and prefer rebuilding certain files myself to avoid errors.