yes..this is new insteon install...i am using ISY994i INSTEON Compatible Automation Controller with Dual-Band PLM ....i have 26 light switches and dimmers....none of them controling each other....using 2 wireless phase couplers to connect opposite phases....yes , it passed connecting test....all switches work fine if i try to turn them on/off ....dimm...thru admin console...also work fine as part of program. But when tried to build a scene, i noticed dimmers responding to scene commands.....switches - not. So....switches work fine outside scenes, but not when they part of the scene....and all switches defined as Responders. My scene is pretty simple: 2 dimmers connected to lights and 2 relay switches connected to flurecent lights. any ideas?