Measure returning error in visual

I followed your advice and enabled tracing, i then proceeded to refresh the page so the visual would try to refresh and hopefully return a meaningful error. I examined the trace file but could not see anything obvious that would constitute an error message. An example of an entry that roughly correlates by time (accurate to seconds) is:

DataMashup.Trace Information: 24579 : {"Start":"2017-02-14T13:29:06.7595288Z","Action":"UISettingsStorage/GetSettings","MetadataSet":[["ShowStartPageForDataInsightsSummit2016","0"],["showStartPage","1"],["MultiArtifactEditorWindowScale_Left","-1911"],["MultiArtifactEditorWindowScale_Top","16"],["MultiArtifactEditorWindowScale_Width","1720"],["MultiArtifactEditorWindowScale_Height","871"],["MultiArtifactEditorWindowScale_Maximized","0"],["multiArtifactEditorRibbonQat",444],["FileHistory",10565],["FormulaBuilderHistory",18157],["DisplayCommandBar","0"],["EditorTaskPaneWidth","266"],["ViewFormulaWindowScale_Left","448"],["ViewFormulaWindowScale_Top","192"],["ViewFormulaWindowScale_Width","1024"],["ViewFormulaWindowScale_Height","656"],["ViewFormulaWindowScale_Maximized","0"],["QueriesEditorWindowScale_Left","1962"],["QueriesEditorWindowScale_Top","89"],["QueriesEditorWindowScale_Width","1736"],["QueriesEditorWindowScale_Height","856"],["QueriesEditorWindowScale_Maximized","0"],["multiArtifactQueriesEditorRibbonQat",326],["DisplayQuerySettingsPane","1"],["MaxCacheSize","4294967296"],["ShowImportCustomVisualSecurityWarningDialog","1"],["DisableNativeDbQueries","0"],["DisableUpdateNotification","0"],["AutoRecoveryFileLocation",67],["PowerBIServiceFileHistory",2],["SSRSFileHistory",2],["LastKnownPBICloudConfig",2234],["DisplayFormulaBar","0"],["UseFixedWidthFont","0"],["AlwaysAllowParameterization","0"],["WebPreviewWarningLevel","0"],["ShowGridlines","0"],["SnapToGrid","0"]],"ProductVersion":"2.43.4647.541 (PBIDesktop)","ActivityId":"00000000-0000-0000-0000-000000000000","Process":"PBIDesktop","Pid":8532,"Tid":26,"Duration":"00:00:00.0001179"}

I don't feel closer to understanding this. I spoke with a DAX expert (in my view, and shall be anonymous) and his initial reaction was that my logic was sound and that this could be an engine error. I should add that my code works in SSMS when i EVALUATE it in an MDX query window against my cube.