Hi @mikefannon,
I tried the Box Activities in a new project in Studio 2020.4.0-beta.472 and everything looks fine.
You could be in the same situation as in this post - UiPath Box Connector - #5 by asinhaP. The Authorization Code is valid for only one request, after that you need to use the Refresh Token. You have an example on how to do that in the link.
Regards
Silviu
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