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Hello everyone, I just bougth a book from MC authored by Don Denoncourt "Java Application Strategis for ISeries and AS400". I then downloaded the code and started playing with it. I was able to run chapters 1 to 4 without any problems. But when I ran the programs on on section 5 (GUI) chap 19 (AWT) I encountered an error, It seems that its not connectiong to the AS/400. I have succeeded on changing all the required parameters and compiling the source, etc. However when I tried to run the ListCustomer, DisplayCustomer and MaintainCustomer program. I encountered an error tha says, ERROR: The application requester cannot established the connection. (Host unreachable:connect java.lang.NullPointerException. I have already change all the AS400 profiles and DDM was started, I have been trying to fix for about a week now, any help will be appreciated. Thanks Sky