You changed the value in the... readme? No. The powertools archive comes with multiple files, including powertools.ini. You need to extract all of them to your sr2 install folder.
You can't possibly have both versions of powertools in there because they both use the exact same files. I would suggest redownloading the last auto timescale beta, extracting all the files to overwrite your existing ones, deleting dxfreezerserver.dll, installing again as administrator to recreate the symbolic link, and finally running it and see if the auto timescale works again.