Unknown error in Repast: does not find some module?

Question

I am launching a model that was created with an old version of repast (RepastSimphony 1.2.0) and I am trying to run it an the latest version of Repast.

I have imported manually the scenarios files to the best of my abilities (I am a beginner with Repast).

Now, when I launch the model in Repast, it has en error because it cannot find a certain file/library/module (I am unsure).

Now, I am not sure whether this is a Repast internal library or some piece of code that I should have been given and that is missing...

Any insight about this error will be welcome !

The error is this one:

WARN  [AWT-EventQueue-0] 13:20:38,158 ObjectActionLoader - Error loading information from data. Continuing with model loading.
com.thoughtworks.xstream.converters.ConversionException: repast.score.impl.SGeographyImpl : repast.score.impl.SGeographyImpl
---- Debugging information ----
message             : repast.score.impl.SGeographyImpl
cause-exception     : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message       : repast.score.impl.SGeographyImpl
class               : java.util.ArrayList
required-type       : java.util.ArrayList
converter-type      : com.thoughtworks.xstream.converters.collections.CollectionConverter
path                : /repast.simphony.visualization.engine.DefaultDisplayDescriptor/projections/repast.score.impl.SGeographyImpl
line number         : 61
class[1]            : repast.simphony.visualization.engine.DefaultDisplayDescriptor
converter-type[1]   : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
version             : 

I traced that the attempt to load something from the scenario description:

    <repast.score.impl.SGeographyImpl>
      <name>PeopleGeography</name>
    </repast.score.impl.SGeographyImpl>
  </projections>
  <valueLayers/>
  <projectionDescriptors>
    <entry>
      <string>PeopleGeography</string>
      <repast.simphony.visualization.engine.DefaultProjectionDescriptor>
        <proj class="repast.score.impl.SGeographyImpl" reference="../../../../projections/repast.score.impl.SGeographyImpl"/>
        <props/>
      </repast.simphony.visualization.engine.DefaultProjectionDescriptor>
    </entry>
  </projectionDescriptors>

Incidentally, I tried to run a model from the model library (zombies) and it launches and works properly.