TW Warhammer introduced two new EsfTypes, so the EditSF could not load, parse and edit Warhammer savegames.
To be able to use it again, replace the EsfLibary.dll in your EditSF folder with this new EsfLibary.zip
Be sure, that if you unzip the downloaded EsfLibary.zip, not to create a new subfolder named "EsfLibary", but to overwrite the existing EsfLibary.dll in its folder directly.
The EsfLibary.dll must have version 1.2.0.1!
It can happen that there are more new types, which I haven't found yet.
Report here if an error pops up.