Good news. Our Rental Booking System and Request for Quote modules are both now compatible with Magento security patch Supee 6788. You can update from where you usually download the extensions which is version 1.4 for the rental booking system and 2.1 for the request for quote module.

This means that you can now go to admin > system > config > admin > security > Admin routing compatibility mode for extensions and disable it. This is supposed to make your admin panel less susceptible to hacking attempts.