Hey, I am curious that the JSON file is invalid because of its name I think.. Can you help? Maybe go onto Teamspeak?
Terraria 1.2.4.1, tAPI Builder r14
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Building mod ShadowVeil
Validating Jsons...
Artifact_Of_The_AirWalker.json: Invalid JSON file.
Invalid token ']' in input string
Failed to build ShadowVeil.
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Built 0 mods.