Error for deserializing

[Daisy-123]

Hi I typed " ./nejiTrain.sh -c Data-Preprocess/sentences -a Data-Preprocess/annotation -if BC2 -f Data-Preprocess/bw_o2_windows.config -o myModel/ -m IPRtab.model " for my project. But I got the error message ,like this " [ERROR] There was a problem running the batch. java.lang.RuntimeException: There was a problem deserializing the corpus. "

It seems used SERIALIZED format to parse corpus, but I already choosed BC2 format. Why I got this error ?

Thank you