How to stop MacOS Document-based App from automatically loading cached file

On launching my app from Xcode, my document-based app automatically apparently tries to load a cached document from a previous launch. That document appears to be corrupted as the app crashes in initWithCoder [which was called from readFromData:].
The solution appears to be to delete the cached documents. Where are they located and is there anything special about deleting them?
This is my question and I'd like to delete it. There doesn't seem to be a way. Please ignore it.
How to stop MacOS Document-based App from automatically loading cached file
 
 
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