After installing Courier 2.5 (previously with 2.0 installed), we no longer see events firing from a class that inherits from ApplicationBase.

public class UmbracoEventHandlers : umbraco.BusinessLogic.ApplicationBase
{
        public UmbracoEventHandlers()
        {
            //Document Events
            umbraco.cms.businesslogic.web.Document.BeforeSave += Document_BeforeSave;
        }
        public void Document_BeforeSave(Document sender, SaveEventArgs e)
        {
            //event
        }
}

Anyone else experience the same issue?

Un-installing courier 2.5 resolves the problem