Windows 10, FMPA14. In a previous thread, I found that a Popover would not go to full size if it covered an interactive PDF container using PDF Architect. Prior to that I used Adobe Acrobat DC and didn't have a problem with the popover. I have changed the Windows default PDF application back to Adobe Acrobat, but Filemaker still is using the PDF Architect. I have deleted the contaner contents and re-inserted the pdf file but it still is using the "incorrect" program to display the pdf. How does Filemaker determine what application to use to display the interactive PDF container contents?