Incompatible number of blobs for layer conv0/bn

[hrexha]

Hi,
I tried to finetune the MobileNetSSD on a custom dataset but when it comes to training the script fails with the following message:

net.cpp:850] Check failed: target_blobs.size() >= source_layer.blobs_size() && target_blobs.size() <= source_layer.blobs_size() + 1 Incompatible number of blobs for layer conv0/bn
*** Check failure stack trace: ***
@ 0x7f8d4e5754dd google::LogMessage::Fail()
@ 0x7f8d4e57d071 google::LogMessage::SendToLog()
@ 0x7f8d4e574ecd google::LogMessage::Flush()
@ 0x7f8d4e57676a google::LogMessageFatal::~LogMessageFatal()
@ 0x7f8d4d1ac7aa caffe::Net<>::CopyTrainedLayersFrom()
@ 0x7f8d4d1b3692 caffe::Net<>::CopyTrainedLayersFromBinaryProto()
@ 0x7f8d4d1b371d caffe::Net<>::CopyTrainedLayersFrom()
@ 0x55c235b9ee27 CopyLayers()
@ 0x55c235ba0688 train()
@ 0x55c235b99a49 main
@ 0x7f8d4b990b97 __libc_start_main
@ 0x55c235b9a689 (unknown)
Aborted (core dumped)
any idea why is that?
Thank you.