[rules-users] Guvnor hates me

Newbie issue: I created a package, com.scs.test I added a model to that package (a java Jar file with POJOs in it). The jar contains com.scs.test.Message and com.scs.test.Person. I edited the package's "Configuration: Imported Types" to include the two objects from the model (com.scs.test.Message and com.scs.test.Person). I go to the package assets and open a business rule. When I click on the plus sign across from When I get the message "Note: No model has been defined. Tip: you will want to import or define a model for this user interface to work !". I thought I had imported a model. When I look at the package assets, the model is listed right there. The objects are listed as "Imported Types". What am I doing wrong? Thanks