I have to keep registering Finale 26 almost daily. I made contact with MakeMusic. But so far they haven't fix the problem. The last suggestion worked for a couple of days then back to registering daily again. Today Sunday Jan. 3. I did a complete Wipe of MakeMusic from my computer. Made  a new user and gave them administration authority. Download the Finale 26 and register it in their name. Logged back in under my name and it worked. When i can back later to do some work it asked for a registration. Well first you have to delete your registration to install your new one. But the program shows no registration. At their website (MakeMusic) it shows I have 2 registrations. But I am not able to delete either one. Any help from anyone would be appreciated.