HDA to UE4 cook error

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Hi Guys:
I need some help, I create a hda have 3 subnet and each subnet have 3 output,which is terrain,geometry,and instance.I put a switch node control each subnet. In houdini all is looks greate,when I put the hda in UE4 two subnet looks ok but when I eable the third subnet the cook is error, I can`t see anything except the houdini logo. I really dont know how to deal with it. Is somebody can help me. I attach some pictures


Attachments:
building not enable.png (3.0 MB)
building enble.png (1.5 MB)
houdini.png (1.5 MB)
houdini_building.png (125.3 KB)
houdini_building1.png (177.2 KB)
houdini_building2.png (120.1 KB)
houdini_building3.png (107.3 KB)

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