Attached Link: http://www.3dcommune.com/3d/store/display.mv?vs_hogw

Its a problem for all us long-time users. Specially since there's a 255 subfolder limit for each of your library categories. There's a library manager utility called Pbooost which will help. For some versions of Poser it doesn't work while the program is running but still useful for swapping out rarely used files. Manually moving files into similar groups will help too. All your Vicky2 Poses in one, all your V3 poses in another etc. MAT files don't need to reside under Poses either. Rename them with a fc2,cm2 or lt2 file extension and they'll work quite happily from your Face, Camera or Light library.

Expert in computer code including, but not limited to, BTW; IIRC; IMHO; LMAO; BRB; OIC; ROFL; TTYL. Black belt in Google-fu.