I have poser pro 2024 64bit on win 7. Had the same problem. After a while all the icons start to vanish as I scroll the library. I updated AIR and the problem seems to have minimized. That and I deleted the c:/users/user/AppData/Local/IconCache.db file and rebooted. Where user is your user name. I still get an occasional dropped icon but nowhere as bad as before. Plus I use an SSD for my poser drive. In fact I noticed this acted up when I swapped to the SSD. Was still a problem before BUT I was losing ALL the icons as I scrolled when I switched to the SSD.