How to tell a plugin not to load older builds because of (backwards) incompatibility

[Ognjen Bubalo]

Hi,

I refactored the JaCoCo plugin and now I get exceptions like: 
com.thoughtworks.xstream.converters.reflection.NonExistentFieldException: 
No such field hudson.plugins.jacoco.JacocoBuildAction.build.

This was a bigger refactor so I don't think it should be clever to put back 
the old fields.

Is there a solution for not loading older builds?

Thanks,
Ogi