If you manage to find a download (legal or otherwise) and run into errors, here is how to fix them:
Official speedrun leaderboards have separate categories for Journey's End (1.4.0 - 1.4.2) . Version 1.4.2.3 allows for specific glitches (like the Hoik duplication exploit) that were patched in later updates. Terraria 1.4.2.3 Free Download