Unable to enter settings for a Modes/Routines/Devices... scenario type

[wilvancleve]

Have had great success with a thermostat scenario type, but wehn I try to create a virtual switch scenario (either a momentary button push or an Alexa Switch), I get the following error logged when I try to enter Control Scenario Settings:

cd91ed7b-1de6-433a-8498-20337d41677f 6:43:29 PM: error groovy.lang.GroovyRuntimeException: Ambiguous method overloading for method physicalgraph.app.InstalledSmartAppService#executeAction. Cannot resolve which method to invoke for [null, class java.lang.String, interface java.util.List] due to overlapping prototypes between: [class physicalgraph.app.InstalledSmartApp, class java.lang.String, class java.lang.Object] [class physicalgraph.device.cache.InstalledSmartAppDTO, class java.lang.String, class java.lang.Object] @ line90``

Any thoughts?