For the first time, in my career, of using FileMaker Pro (ver 3 - 15), an update "broke" my solution. I have an invoice document management solution that I developed. It has worked great for me. I am using Windows 10 Professional. My machine is several years old, and I have had to skip upgrading to a newer box, because I could not get FileMaker Pro to display the invoice image with Adobe. It has just worked.
That is until putting the 15.03 upgrade. Now, it shows a gray screen
I am going to do a complete reboot. If that does not work, then I am going to reinstall. I cannot be without this solution.
I considered deleting this, since a complete RESTART of Windows, then opening my solution did work. It is the first time that a complete shutdown was necessary. So I am going to leave my comment, in case it helps someone else.