What was the error? Which cf engine?
Just updated one of our project from 1.5.6, update ran smoothly.
Had a problem: the site failed after reloading the application, but did a restart of cf and the error disappeared.
Application Execution Exception CFErrorType=Expression CFMessage=Element contentservice@cb is undefined in a Java object of type class java.util.concurrent.ConcurrentHashMap. CFStackTrace=coldfusion.runtime.UndefinedElementException: Element contentservice@cb is undefined in a Java object of type class
in \coldbox\system\ioc\scopes\Singleton.cfc:70
Went to admin, reloaded application…
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