I thought that saying "No, sorry." was enough and that you wouldn't have tried it despite my reply, but obviously I should have told you that if you did it in spite of me telling you it wasn't possible, you might create problems...
Indeed, the parameter structure and settings are not identical between ProfiLux 3 and ProfiLux 4...
Open a ticket to help you get your ProfiLux up and running again: https://www.aquariumcomputer.com/sup...ets-enquiries/ (Guest login)

Gaël