The display worked with the repast examples (heatbugs, jzombies ecc).
It run normally for some simple projects i made.
Then I try to use the value layer method. I create a new display to visualize it. It doesn't work. Neither do the rest of the displays in the project that previously worked.
I try to find out what happened...
I create the simplest project (continuous space , one agent). I get a display error message. I provide here the whole stuff.
Although i can't get a display running in this simple project, the previously made projects' display works normally.