Looking for this specific 64-bit version today poses several risks:

Old "cracked" software is a primary delivery method for malware, ransomware, and miners. Files hosted on third-party "top" sites are often modified by bad actors long after the original uploader (ChingLiu) disappeared.

A feature that automatically leveled horizons and straightened skewed perspective in architectural shots.

This allowed users to edit images without having the original heavy RAW files connected to the computer. The "ChingLiu" Factor