you have to add them into the prefab list in 7dtd and switch the poi set in nitrogen to something other than vanilla
creating output directory: BUT WHY C:\Users\Traum\Desktop\NitroGen_WorldGenerator\output\BUT WHY
output directory created
running generation thread
... running terrain generation ...
java.io.FileNotFoundException: C:\Users\Traum\Desktop\NitroGen_WorldGenerator\output\BUT WHY\radiation.png (The system cannot find the path specified)
at java.io.RandomAccessFile.open0(Native Method)
at java.io.RandomAccessFile.open(Unknown Source)
at java.io.RandomAccessFile.<init>(Unknown Source)
at javax.imageio.stream.FileImageOutputStream.<init>(Unknown Source)
at com.sun.imageio.spi.FileImageOutputStreamSpi.createOutputStreamInstance(Unknown Source)
at javax.imageio.ImageIO.createImageOutputStream(Unknown Source)
at javax.imageio.ImageIO.write(Unknown Source)
at nitrogen.terraingen.ToolImageProcessor.b(Unknown Source)
at nitrogen.terraingen.ToolImageProcessor.a(Unknown Source)
at nitrogen.terraingen.c.b(Unknown Source)
at nitrogen.gui.NitroGenUI.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at javax.imageio.ImageIO.write(Unknown Source)
at nitrogen.terraingen.ToolImageProcessor.b(Unknown Source)
at nitrogen.terraingen.ToolImageProcessor.a(Unknown Source)
at nitrogen.terraingen.c.b(Unknown Source)
at nitrogen.gui.NitroGenUI.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
null
Total time taken: 0 min 0 sec