Installing this KS225 in the kitchen to control undercabinet lights. The outlet has a plug and the switch which are protected by a GFCI circuit breaker in the basement. I have wired it according to the manual Line, Load, Ground and Neutral. When I go down to the basement to turn the GFCI circuit breaker back on, it trips immediately. I have read online to switch the Line and Load wires on the KS225, tried that and it doesn't work at all. Also read to try to separate the neutrals in the outlet, that doesn't work either. Any ideas?

Kit Lights is the GFCI circuit breaker

The white neutral is in fact connected to the neutral bundle.

his pic shows the KS225 with the outlet next to it. Both are protected by the GFCI circuit breaker above.