In SX Microcontrollers, SX/B Compiler and SX-Key Tool, nate wrote: I have gotten this error message before, and it usually was caused by the [b]SX-Key[/b] needing more power (amperage) than the SX circuit could supply (from my experence, the SX-Key will crash before the SX itself browns-out). Since your problem happens when your second sub-circuit is attached, it sounds like the sub-circuit is draining so much power that there is not enough left for the SX-Key. A short or mis-wiring perhaps? Try switching the two sub-circuits, does the error now appear when #1 is attached? Nate ---------- End of Message ---------- You can view the post on-line at: http://forums.parallax.com/forums/default.aspx?f=7&p=1&m=108223#m108310 Need assistance? Send an email to the Forum Administrator at forumadmin@parallax.com The Parallax Forums are powered by dotNetBB Forums, copyright 2002-2006 (http://www.dotNetBB.com)