One is ordinary SIT file, other two are SITX files. ONLY add these to the LW preferences folder whilst LW is closed.

OS 9: Download - ifile.it ___ LW 4.16: Download - ifile.it ___ LW 5: Download - ifile.it
These all should work, but try the OS 9 one first. To download, click on link, click on Request Download Ticket at top left of page, likewise top left click Download link.

In OS 9, I found it best to set LW not to connect on startup. I'd open LW, let the shares & incomplete files load, wait a few minutes, then go to File menu & choose Connect.