In your profile, you should find a file called LibraryPrefs.xml. This file holds the list of runtimes that will be used by Poser, and in what order.
So,  be sure that even if you replaced your old drive that the paths are still the same.

For  Windows, for example, be sure that the drive letter + the path are the same. In this OS, head over %appdata%\Poser Pro\11 for P11 and %appdata%\Poser\12 for P12.
For Mac's world I don't know, but it's only a matter of path, and the computer also have this file, located somewhere... under your profile?

Don't hesitate to compare one functioning runtime and the one that's failing: something's looks different, especially if you check with your LibraryPrefs.xml.

𝒫𝒽𝓎𝓁

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(っ◔◡◔)っ

👿 Win11 on i9-13900K@5GHz, 64GB, RoG Strix B760F Gamng, Asus Tuf Gaming RTX 4070 OC Edition, 1 TB SSD, 6+4+8TB HD
👿 Mac Mini M2, Sequoia 15.2, 16GB, 500GB SSD
👿 Nas 10TB
👿 Poser 13 and soon 14 ❤️