There are some examples of state machines which ship with LV. Also search the archives. As for the error clusters, look at some of the high level DAQ VIs. Many of those use the error clusters for both controlling the sequence of execution (Configure port, configure buffer, start, read, close) and for bypassing attempts to do soemthing if an error had occurred previously. Some VIs may be better at this than others, so look at several. There probably will not be any explanation of this so you may have to study what is done a bit. I have not looked at the Tutorial, but since using error clusters and dataflow is fundamental to the way LV works, these topics may be covered there.
Lynn
