So I finally got TTW going, but it was a headache. On my Win10/64 box, I usually use 7-Zip through the right-click menu, but I found that if I right-click, hover over 7-Zip, and select "extract files" or "extract to <dirname>" or similar, I get a broken mess of files. I get warnings about needing to replace files with other files nested in resource/blah/blah... and so on, and the net result is the same whether or not I allow replacement. However, if I actually fire up the 7-Zip GUI and open the archive, I can then basically copy things out of the archive in the right file structure and can proceed from there. Tested with three out of four of the TTW download links, so it appears to be a consistent problem.
Is there a known issue with how the .7z is constructed for TTW?
Another data point: I moved the .7z to my FreeBSD file server and unpacked it there. Examining the archive using the command-line 7z tool, everything looks right...But if I extract it, it results in the same broken mess.