Seems xtool has problems again with some DLL files inside Game\Bin\ directory (you will get CRC errors, especially on QtWebKit.dll)...
I will update Setup asap
Edit: The problem is not xtool. Either srep or lzma is the problem. Have to figure it out. Will test further tomorrow.
Edit 2: Compressor Fix added.
You only need this if you get CRC error on "QtWebKit.dll" file during installation. If you get this error, copy&paste all files/folders from "Sims.4.v1.55.105.1020.Compressor.Fix.7z" to conversion folder and replace all files. Go to "Setup" folder and run "ApplyPatch.bat" to patch the Setup.exe file. Delete all files and folders in "Output" folder and start compression again.