You have installed the 32-bit version in the 64-bit folder (or vice versa). CS5 has separate Plug-ins folders for each architecture. Ensure you match the bit version of the plugin to the version of Photoshop you launched.
It wasn't the modern AI slop. It had no sliders for "Age" or "Glow." It had one slider: Sympathy . portraiture plugin for photoshop cs5
Elena scanned the photo at 2400 DPI. She opened CS5. She cleaned the dust and scratches manually. Then, with a deep breath, she clicked Filter › Imagenomic › Portraiture. The Digital Darkroom: An Essay on the Portraiture
: It automatically detects skin tones and creates a mask, allowing adjustments to affect only the skin without needing manual brushing. It wasn't the modern AI slop
The interface provides specialized sliders to fine-tune the retouching process: