There is a Poser preference called LIB_ITEMS_SERVER_SORT, which lives in the PoserPrefs file. This preference was added to account for the change in later releases of MacOS when SSD drives were introduced. Since solid state drives have a limit (though large) to their number of write cycles, directory routines in the OS were modified to no longer return alphabetically sorted lists of files, but rather storage sorted lists.

If you open the Python shell within Poser, typing the command:

>>> poser.PrefsLocation()

will show you where the prefs file is stored on your system. That's usually in /Users//Library/Application Support/Poser Pro/11, or something similar. The file you want, called PoserPrefs is a plain text file, but before you edit it, make a copy of it with another name or put a copy somewhere else. Before you edit the preferences file, make sure you shut down Poser, as it overwrites the file when it exits. Open the file in a text editor (I use BBEdit, but TextEdit works too), but not a word processor, so you don't get crap added, or the file format changed. Search for LIB_ITEMS_SERVER_SORT, and change the value you find there (either from 1 to 0, or 0 to 1) - I'm running MacOS Sierra 10.12.6, and the value I have is 1. I've also tried MacOS High Sierra, but I didn't have a spare SSD to install it on, so it's on an ordinary HD, and consequently wasn't formatted APFS, so it also doesn't give unsorted file lists. Save the preferences file and then reopen Poser. Refresh the Library, if need be and see what happens. It should then be OK.

The only problem which will remain is that the Recent Renders list may still be in some random order, as it apparently doesn't use that preference flag to have Poser sort the list before display.

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