Diesel Tool System.ArgumentOutOfRangeException...

For some reason, when I try to export the com_prop_jewelry_tiara.model or the com_prop_jewelry_display_jewel_2_b.model, i get this stupid error...
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Does anybody know how to fix it or avoid it?
I tested it with "add new objects" on and off and I was trying to import and export the same model with the tool to see if it works.
Are you sure that I can't do anything about it? There has to be something...