Just one more thing. Another no-crash scenario:
select all items in the default level except the first one in the World Outliner,
export selected to t3d,
import t3d back into level => no crash
Just one more thing. Another no-crash scenario:
select all items in the default level except the first one in the World Outliner,
export selected to t3d,
import t3d back into level => no crash