Actually, it looks like the issue might not be a missing tag, but the filter itself. Looks like it filters on the string 'Fires Explosive Arrows' and Demon Machine is tagged with 'Fires Explosive Bolts'. Changing the filter to look up 'Fires Explosive' should fix the issue without including items without this attribute.
EDIT: If logical statements work for filters, using an OR would work too. Other option would be to change the attribute on the item to match other similar unique crossbows. You'll know what works best!
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Squelches this trader, making their offers on your trades invisible to anyone except themselves. Their trade listings will also be hidden from your marketplace.
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Katonda
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