I see the crash happening when the conditional layouts are trying to set a property which for some reason bothers the theming implementation. The ascendant themed item lookup may be in trouble there, so it seems a theming FW bug.
I see the crash happening when the conditional layouts are trying to set a property which for some reason bothers the theming implementation. The ascendant themed item lookup may be in trouble there, so it seems a theming FW bug.