(...) Juergen, Many thanks for that, but I am still getting the same error even when renaming my directories without spaces. Everything compiles fine, it is just when I try to run the code. Any other ideas? Thanks again. Laurence (20 years ago, 16-Nov-04, to lugnet.robotics.rcx.java)
(...) That it compiles shows that RCXPort.class is there, it should be in c:\lejos\lib\pcrcxcomm.jar (you can check with jar tvf c:\lejos\lib\pcrcxcomm.jar ). So apparently the java command doesn't get the proper classpath You can try giving it (...) (20 years ago, 16-Nov-04, to lugnet.robotics.rcx.java)
