Pressing the "validate" button in the solver configuration editor fails with the message "The scanAnnotatedClasses (ScanAnnotatedClassesConfig()) did not find any classes with a PlanningSolution annotation."

This is because the ProjectClassLoader isn't passed to the SolverFactory:

Instead of

   SolverFactory.createFrom...(...);

use

   ClassLoader projectClassLoader = ...;
   SolverFactory.createFrom...(..., projectClassLoader);

Not sure how to get the ProjectClassLoader, but Walter might know:

<wmedvede> ... the classes generated by the datamodeller (once compiled) are accessible through the ProjectClassLoader, they are not in the SystemClassLoader