im running my 2gigs ram in zb4, and last time i could export all of maps with multi map exporter. and now, i have already exported all of maps, except cavity map. when i want to export cavity map, it gave me message that i dont have enough memory. i even use have set the blur menu into 0 in the export option. and the map size is 256, but it says that im running out of memory. anyone can help? thank you very much.
What are your settings in the Preferences>Mem menu? How many polys is the model?
total polys: 3656976
compact mem is 256
actually its a demo_head.ztl, i just modified it. i subdivided it 6 times
today, i press delete higher, and stay in subdiv 5, and i can export it successfully.
i hope you could help 
thanks