The link was broken, but the file hash wasn’t.
The progress bar filled.
The setup wizard opened. Teal gradient background. Clip art of a lightbulb.
Then, last Tuesday, a forum post from 2016 surfaced on the Wayforward Machine: "Re-upload: creation coreldraw-12 x3 x4 x5-plug-in v1.2-setup.rar – mirror 3 (working)"
The plugin’s original developer had vanished in 2013. The domain was dead. Even torrent archives listed it as "lost."