There is a block in BaseModel.java that checks to see if the model's major version number matches OpenNLP's major version number. Running this with an OpenNLP 2.0.0 version causes the check to fail (2 != 1).
I have made a pull request [1] to change that check to just make sure the major version number of the model is 1. I took out the part where it checks to make sure the minor release is no more than 4 versions behind. This seems ok but I would like to hear from anyone who thinks there's a better way to handle this check (or if you're ok with it please approve the pull request). Thanks, Jeff [1] https://github.com/apache/opennlp/pull/415
