CRASHING Fairgraves' Curse Artillery Bow

Using the ability causes crashing.
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Error loading type Metadata/Effects/misc/Uniques/weapons/TwoHandWeapons/Bow/Dealers_Hand/AOs/ghostflame_blast:

'Metadata/Effects/misc/Uniques/weapons/TwoHandWeapons/Bow/Dealers_Hand/AOs/ghostflame_blast': Error:
Metadata/Effects/misc/Uniques/weapons/TwoHandWeapons/Bow/Dealers_Hand/AOs/ghostflame_blast.ao is non-virtual and does not have a physical file


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I've already tried verying game integrity and reinstalling and error keeps popping up