[news.eclipse.newcomer] Console is ambiguous

[yhrave@xxxxxxxxx ( Yao)]

hi all,

I am using Eclipse SDK Version: 3.3.2 Build id: M20080221-1800, with JRE 
1.6.0_05 by SUN.

I am building a JAVA project(BIOCONTROL) that has another JAVA project 
(MASON) in its build path. When I try to run the java main class, I get 
the following error message in my console window and I am stuck! Can 
someone help me out ?
Thanks!


Exception in thread "main" java.lang.Error: Unresolved compilation 
problem: 
	The type Console is ambiguous

	at 
sim.portrayal.inspector.PropertyInspector.getPopupMenu(PropertyInspector.java:228)
	at 
sim.portrayal.SimpleInspector.generateProperties(SimpleInspector.java:184)
	at sim.portrayal.SimpleInspector.<init>(SimpleInspector.java:65)
	at sim.portrayal.SimpleInspector.<init>(SimpleInspector.java:53)
	at sim.display.GUIState.getInspector(GUIState.java:210)
	at sim.display.Console.buildModelInspector(Console.java:995)
	at sim.display.Console.<init>(Console.java:835)
	at biocontrol.FieldUI.main(FieldUI.java:22)