CDB output disappears

When stepping through my code, if I have certain structures expanded in the expressions view the next step into the code makes the expressions view clear.  The error in the debugger log is this:

eERROR: output=[msg=[line=" File $<string>$, line 1",line=" theDumper.fetchVariables({$autoderef$:1,$context$:$$,$displaystringlimit$:$100$,$dyntype$:1,$expanded$:[$return$,$inspect$,$local.this.@1.@1$,$local.this$,$watch$,$local$,$local.this.@1$],$fancy$:1,$formats$:{$local.componentWidget$:1,$local.copyBackLocation$:1,$local.directionPacketRef.directions.0$:12,$local.directionPacketRef.directions.1$:12,$local.directionPacketRef.directions.2$:12,$local.info.vertexPacketReference.xyz.0$:12,$local.info.vertexPacketReference.xyz.1$:12,$local.info.vertexPacketReference.xyz.2$:12,$local.info.vertices.m_objectPackets.0.variables.@1.@1._Myfirst._Val$:12,$local.info.vertices.m_objectPackets.0.variables.@1._Myfirst._Val$:12,$local.info.vertices.m_objectPackets.0.variables._Myfirst._Val$:12,$local.kernel_src$:14,$local.matRef.values.0.0$:14,$local.matRefValues$:13,$local.packetData$:1,$local.packetList.values.0.0$:1,$local.packetList.values.0.1$:1,$local.packetList.values.0.2$:1,$local.packetList.values.0.3$:1,$local.packetList.values.1.0$:1,$local.packetList.values.1.1$:1,$local.packetList.values.1.2$:1,$local.packetList.values.1.3$:1,$local.packetList.values.2.0$:1,$local.packetList.values.2.1$:1,$local.positionPacketRef.coordinates.0$:14,$local.positionPacketRef.coordinates.1$:14,$local.positionPacketRef.coordinates.2$:14,$local.radiusRangeRef.radius$:12,$local.rangeReference.coordinates.0$:12,$local.refValues$:12,$local.referenceList$:1,$local.referenceLocation$:1,$local.sensableInfo.previousSensingSensorIndexes$:12,$local.sensableInfo.ranges$:12,$local.sensableInfo.sensingSensorIndexes$:12,$local.sensableInfoList.ranges$:12,$local.sensableInfoList.sensingSensorDistances$:14,$local.sensableInfoList.sensingSensorIndexes$:14,$local.sensableInfoList.sensorDistAccumulation$:14,$local.sensablePosRangeRef.coordinates.0$:12,$local.sensablePosRangeRef.coordinates.1$:12,$local.sensableRangeRefs.@1.@1.@1.@1.@1._Myfirst._Val.mode$:12,$local.sensablesInfo.sensableInfoList$:12,$local.sensablesInfo.sensableInfoList.0.previousSensingSensorIndexes$:12,$local.sensablesInfo.sensableInfoList.0.sensingSensorIndexes$:12,$local.sensablesInfo.sensableInfoList.1.sensingSensorIndexes$:12,$local.sensorPosRangeRef.coordinates.0$:12,$local.sensorPosRangeRef.coordinates.1$:12,$local.sensorPosRangeRef.coordinates.2$:12,$local.sensorPositionRangeRef.coordinates.0$:14,$local.sensorRangeRefs.@1._Myfirst._Val.coordinates.0$:12,$local.startAddress$:1,$local.startAddress.$:1,$local.structureData$:1,$local.structureData.$:1,$local.this$:1,$local.this.@1.m_dataVector.m_objectPackets.0.variables.@1.@1._Myfirst._Val$:14,$local.this.@1.m_dataVector.m_objectPackets.0.variables.@1._Myfirst._Val$:14,$local.this.@1.m_dataVector.m_objectPackets.0.variables._Myfirst._Val$:14,$local.this.@1.m_objectPackets.0.copyBacks.0.copyLocation$:1,$local.this.@1.m_output$:1,$local.this.copyBacks.0.copyLocation$:1,$local.this.copyBacks.1.copyLocation$:1,$local.this.fullCopyBackVector$:1,$local.this.m_data$:1,$local.this.m_hostCopyBackPointer$:1,$local.this.m_memory$:1,$local.this.m_packetReference.values.0.0$:14,$local.this.m_runTimeHandles.fileName$:12,$local.this.m_sensorsInfoToSensablesInfoList.0.second.@1.0.sensableInfoList$:12,$local.this.m_sensorsInfoToSensablesInfoList.0.second.@1.0.sensableInfoList.sensingSensorIndexes$:12,$local.value$:12,$local.valuePointer$:12,$local.values$:13,$local.variable$:1,$local.variableData$:1,$local.vectorIdentityMatrixes.@1.m_objectPackets.0.fullCopyBackVector$:1,$local.vectorIdentityMatrixes.@1.m_objectPackets.0.variables.@1.@1.@1._Myfirst._Val$:13,$local.vectorIdentityMatrixes.@1.m_objectPackets.0.variables._Myfirst._Val$:13,$local.vectorIdentityMatrixes.m_packetReference.values.0.0$:14,$watch.2$:23,$watch.2.$:23},$nativemixed$:0,$partialvar$:$$,$passexceptions$:0,$qobjectnames$:1,$stringcutoff$:$10000$,$timestamps$:0,$typeformats$:{$char$:1,$float*$:12},$uninitialized$:[$72616e676553656e736f7273496e666f$,$73656e7361626c65426568427566666572496e646578$,$73656e7361626c654265684275666665724f6666736574$,$6e657753656e7361626c65496e666f4c697374$,$73656e736f72436f756e74$],$wa ",line=" ^",line="SyntaxError: EOL while scanning string literal",],]
^ pass count must be preceeded by whitespace error in 'tchers":[]})'