RCM_HelperQueries N/A after upgrade

Hello all, After an OFC upgrade, seeing the following error message trying to pull a time based attribute audit report. Has anyone run into a similar message? In comparing to another version of PROD, the earlier version is written in VB.Net, and the upgrade in C#; making comparison difficult.

Unable to execute Business Rule 'RCM_HelperQueries'.
Object reference not set to an instance of an object.

User Interface Stack Trace:
   at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
   at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
   at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(MethodInfo targetMethod, Object[] args)
   at generatedProxy_5.StartGetDashboardDisplayInfoCompressed(SessionInfo, LoadDashboardInfo, Dictionary`2, Dictionary`2)
   at OneStream.Client.Api.Wcf.DashboardsAjaxServiceReference.DashboardsAjaxServiceClient.StartGetDashboardDisplayInfoCompressed(SessionInfo si, LoadDashboardInfo loadDashboardInfo, Dictionary`2 customSubstVars, Dictionary`2 visibleAndHiddenEmbeddedDashboards)
   at OneStream.Client.SharedUI.DashboardPageOrDlgHelper.DisplayDashboardAsync(LoadDashboardReasonType loadDashboardReason, IXFDashboardComponentSelectionChangedSettings selectionChangedSettings, Dictionary`2 initialModifiedCustomSubstVarsForSelectionChanged, Boolean drawPrimaryAndAllEmbeddedDashboards, Dictionary`2 dashboardNamesToRedraw, XFSelectionChangedNavigationInfo selectionChangedNavigationInfo, Boolean isReadOnlyRegardlessOfDashboardSettings, OnAfterRequestParametersAndDisplayDashboardAsyncDelegate onAfterDelegate)