IntegratedML SQL PREDICT/PROBABILITY Error

I've been playing with IntegratedML and have created a model and trained the model.  When I try to use PREDICT or PROBABILITY statements in an SQL query, I get the following error:

[SQLCODE: <-400>:<Fatal error occurred>]

  [%msg: <PREDICT execution error: ERROR #5002: ObjectScript error: <OBJECT DISPATCH>%LoadModel+31^%ML.AutoML.TrainedModel.1 *<class 'AttributeError'>: 'str' object has no attribute 'decode' - >]

Here's an example of the sequence of steps I've followed that lead to the error:

CREATE MODEL MyModel PREDICTING (IsError BOOLEAN) FROM Example3.ModelTable

TRAIN MODEL MyModel AS MyModelTrained

SELECT PREDICT(MyModel) IsErrorPrediction,* FROM Example3.TestSet

Is there something I'm missing?

Thanks,

Don Martin