I have a problem when I use the Eclipse IDE and lejos pluguin. When I try to compile a program that uses pluguin the following error appears: "Build path entry is missing: org.lejos.nxt.ldt.LEJOS_LIBRARY_CONTAINER / nxt"
I can't read the path, but it looks you configured some folder called "lejos-win32-2.1..". Did you by any change download and install the RCX version of leJOS? The plug-in is only for leJOS NXJ. Download that, and everything should be fine.