Thanks for reporting this. This is something we have contacted Navigraph about several times since the RJ Professional release and unfortunately, we are still awaiting a response. I will check back with our team early next week to see if we received a response to our most recent message.
In the meantime, we would recommend reverting back to the default 2401 navdata that is included with the F28 Professional. This can be done by running the F28 Professional installer and selecting the "Repair" option.
Mark - Just Flight