Quote - Open Poser, go to Edit => General Preferences  (Ctrl + K) => Library Tab and then check if the File search is set to Deep.

P6 doesn't have that option (it was introduced in P7).

The main problem here is that you shouldn't be putting additional Runtimes in your P6 program directory (the problem with naming was covered earlier).

I suspect that MacOS may be setting the permissions on files differently in directories that it expects to contain programs rather than data.
The other possible problem premissions-wise would be that they're set in such a way that because they're owned by another user you're getting an indication that the user you're logged in as doesn't have full access to them.