Are you trying to query a table that got dropped?
By the way, SQL Server does not keeps track of who drops and object but you can be certain was either the owner of the object or somebody with dbo or higher privileges on it.
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Pablo (Paul) Berzukov
Author of Understanding Database Administration available at Amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.