I am currently trying to control the user LED on a 9004 RIO. However, when originally loading the RT LED vi it could not find the file, ni_emb.dll, in the right location. I searched my computer and found it. When i tried to load the program again and it asked for the location, i browsed the window it provided til i found it. Now when i load the vi, it states "Call Library Function Node 'LedInput': Node not supported in current target", "Call Library Function Node 'LedOutput': Node not supported in current target" Is there a way i can reload the RT LED vi. Thanks