message: finished all instances in Top.fpp, currently getting None.get error from compiler
diff: @@ -35,9 +35,15 @@ module Ref {
  instance fileUplinkBufferManager: Svc.BufferManager base id 301
  - instance fileDownlink: Svc.FileDownlink base id 501
  + instance fileDownlink: Svc.FileDownlink base id 501 \
  + queue size 30 \
  + stack size 10 * 1024 \
  + priority 100
  - instance fileManager: Svc.FileManager base id 601
  + instance fileManager: Svc.FileManager base id 601 \
  + queue size 30 \
  + stack size 10 * 1024 \
  + priority 100
  instance textLogger: Svc.PassiveTextLogger base id 521
  @@ -57,29 +63,50 @@ module Ref {
  instance rateGroupDriverComp: Svc.RateGroupDriver base id 461
  - instance rateGroup1Comp: Svc.ActiveRateGroup base id 21
  + instance rateGroup1Comp: Svc.ActiveRateGroup base id 21 \
  + queue size 10 \
  + stack size 10 * 1024 \
  + priority 120
  - instance rateGroup2Comp: Svc.ActiveRateGroup base id 161
  + instance rateGroup2Comp: Svc.ActiveRateGroup base id 161 \
  + queue size 10 \
  + stack size 10 * 1024 \
  + priority 119
  - instance rateGroup3Comp: Svc.ActiveRateGroup base id 241
  + instance rateGroup3Comp: Svc.ActiveRateGroup base id 241 \
  + queue size 10 \
  + stack size 10 * 1024 \
  + priority 118
  - instance sendBuffComp: Ref.SendBuff base id 81
  + instance sendBuffComp: Ref.SendBuff base id 81 \
  + queue size 10
  instance recvBuffComp: Ref.RecvBuff base id 101
  - instance pingRcvr: Ref.PingReceiver base id 41
  + instance pingRcvr: Ref.PingReceiver base id 41 \
  + queue size 10 \
  + stack size 10 * 1024 \
  + priority 100
  - instance SG1: Ref.SignalGen base id 181
  + instance SG1: Ref.SignalGen base id 181 \
  + queue size 10 #instance 0
  - instance SG3: Ref.SignalGen base id 201
  + instance SG3: Ref.SignalGen base id 201 \
  + queue size 10 #instance 2
  - instance SG2: Ref.SignalGen base id 221
  + instance SG2: Ref.SignalGen base id 221 \
  + queue size 10 #instance 1
  - instance SG5: Ref.SignalGen base id 281
  + instance SG5: Ref.SignalGen base id 281 \
  + queue size 10 #instance 4
  - instance SG4: Ref.SignalGen base id 321
  + instance SG4: Ref.SignalGen base id 321 \
  + queue size 10 #instance 3
  - instance blockDrv: Drv.BlockDriver base id 481
  + instance blockDrv: Drv.BlockDriver base id 481 \
  + queue size 10 \
  + stack size 10 * 1024 \
  + priority 140
  topology Top {
  