I use lots of LEDs and CFLs with different X10 modules. Also use many LED XMAS strings. All for one to two years now. I too ran into similar problems. So my solution was to leave at lest one incandence bulb in the circuit. I suppose that is like putting a resistor across the load.
Exactly.
I also use 4W and 7W nightlights whenever I can (like in the same Appliance Module as the coffee maker so when turned off, and the hot plate thermostat closes for more pot heat, the AM does not turn the coffee back on. I also have nightlights in the outdoor light fixtures to prvent LED bulb flicker when off. They also allow me to use WS467 two wire switches to control the fixtures).
I don't like hanging a resistor across the load as it is difficult to mount them in an electrically safe manner. But the fan housing had plenty of room and good air flow.