Well when my Libraries get overly full with Textures and models it seems my Bryce does the same thing so I go thru the tedious job of exporting each and saving somewhere then uninstalling and reinstalling then the problem goes away so now I dont fill my libraries up I just grab what I need but this is on my machine...I hope this has not happened to you because on some of my models it took several minutes to export even useing an AMD 1.3 w/512 ddr...