We performed the updates in order and read the site at each update. no errors were reported during the upgrade.
Below is the event error detail:
Event ID: 1292138
Event type: Error
Event time: 5/4/2016 2:14:27 PM
Source: PortalEngine
Event code: LoadWebPart
User ID: 53
User name: XXXXXXXXXXXX
IP address: XX.XX.XXX.XXX
Description:
Message: The file '/CMSWebParts/Viewers/Effects/lightbox.ascx' does not exist.
Exception type: System.Web.HttpException
Stack Trace:
at System.Web.UI.Util.CheckVirtualFileExists(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate)
at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath)
at CMS.ExtendedControls.ControlDefinition.Load(Page page)
at CMS.PortalControls.CMSWebPartZone.LoadWebPart(Control container, CMSWebPartZone zone, WebPartInstance part, Boolean reloadData, Boolean isVariant)