diff --git a/src/CCvcDb_interactive.cc b/src/CCvcDb_interactive.cc
index 800377c..7fd2b9a 100755
--- a/src/CCvcDb_interactive.cc
+++ b/src/CCvcDb_interactive.cc
@@ -1197,12 +1197,12 @@ void CCvcDb::DumpUnknownLogicalPorts(instanceId_t theCurrentInstanceId, string t
 					mySearchInstance = UNKNOWN_INSTANCE;
 				}
 				if ( mySearchInstance == UNKNOWN_INSTANCE ) {  // source outside hierarchy or input (no source)
-					mySearchInstance == FindNetInstance(myNet, theCurrentInstanceId);
+					mySearchInstance = FindNetInstance(myNet, theCurrentInstanceId);
 				}
 				if ( IsInternalNet(myNet, mySearchInstance) ) continue;  // ignore non ports
-				netId_t port_it;
+				//netId_t port_it;
 				CInstance * mySearchInstance_p;
-				CCircuit * mySearchCircuit_p;
+				//CCircuit * mySearchCircuit_p;
 				text_t myLocalNetName = NULL;
 				while ( mySearchInstance != theCurrentInstanceId && IsSubcircuitOf(mySearchInstance, theCurrentInstanceId) && ! myNetFound ) {
 					// unfortunately requires 2 reverse searches. port given global net, and name given port
@@ -1220,8 +1220,8 @@ void CCvcDb::DumpUnknownLogicalPorts(instanceId_t theCurrentInstanceId, string t
 				}
 				if ( ! myNetFound && mySearchInstance == theCurrentInstanceId ) {  // include internal nets of top level
 					mySearchInstance_p = instancePtr_v[theCurrentInstanceId];
-					mySearchCircuit_p = mySearchInstance_p->master_p;
-					netId_t mySearchLimit = mySearchInstance_p->localToGlobalNetId_v.size();
+					//mySearchCircuit_p = mySearchInstance_p->master_p;
+					//netId_t mySearchLimit = mySearchInstance_p->localToGlobalNetId_v.size();
 					myLocalNetName = GetLocalNetName(theCurrentInstanceId, myNet);
 					if ( myLocalNetName != NULL ) {
 						myNetFound = regex_match(myLocalNetName, mySearchPattern);
diff --git a/src/CInstance.cc b/src/CInstance.cc
index 5b8b1ed..cb4ad6c 100755
--- a/src/CInstance.cc
+++ b/src/CInstance.cc
@@ -60,13 +60,13 @@ void CInstance::AssignTopGlobalIDs(CCvcDb * theCvcDb_p, CCircuit * theMaster_p)
 	instanceId_t myLastSubcircuitId = theMaster_p->subcircuitPtr_v.size();
 	instanceId_t myNewInstanceId;
 	for (instanceId_t subcircuit_it = 0; subcircuit_it < myLastSubcircuitId; subcircuit_it++) {
-		if (theMaster_p->subcircuitPtr_v[subcircuit_it]->master_p->deviceCount > 0) {
+		//if (theMaster_p->subcircuitPtr_v[subcircuit_it]->master_p->deviceCount > 0) {
 			myNewInstanceId = firstSubcircuitId + subcircuit_it;
 			CDevice * mySubcircuit_p = theMaster_p->subcircuitPtr_v[subcircuit_it];
 			if ( mySubcircuit_p->master_p->instanceId_v.size() == 0 ) mySubcircuit_p->master_p->AllocateInstances(theCvcDb_p, myNewInstanceId);
 			theCvcDb_p->instancePtr_v[myNewInstanceId] = new CInstance;
 			theCvcDb_p->instancePtr_v[myNewInstanceId]->AssignGlobalIDs(theCvcDb_p, myNewInstanceId, mySubcircuit_p, 0, this, NOT_PARALLEL);
-		}
+		//}
 	}
 	theCvcDb_p->netParent_v.shrink_to_fit();
 	theCvcDb_p->deviceParent_v.shrink_to_fit();
@@ -133,11 +133,11 @@ void CInstance::AssignGlobalIDs(CCvcDb * theCvcDb_p, const instanceId_t theInsta
 	for (instanceId_t subcircuit_it = 0; subcircuit_it < myLastSubcircuitId; subcircuit_it++) {
 		myNewInstanceId = firstSubcircuitId + subcircuit_it;
 		CDevice * mySubcircuit_p = master_p->subcircuitPtr_v[subcircuit_it];
-		if (mySubcircuit_p->master_p->deviceCount > 0) {
+		//if (mySubcircuit_p->master_p->deviceCount > 0) {
 			if ( mySubcircuit_p->master_p->instanceId_v.size() == 0 ) mySubcircuit_p->master_p->AllocateInstances(theCvcDb_p, myNewInstanceId);
 			theCvcDb_p->instancePtr_v[myNewInstanceId] = new CInstance;
 			theCvcDb_p->instancePtr_v[myNewInstanceId]->AssignGlobalIDs(theCvcDb_p, myNewInstanceId, mySubcircuit_p, theInstanceId, this, isParallel);
-		}
+		//}
 	}
 }