Thanks for the reply. The change in XML was a very simple one: I removed two items from a file that has been working for years. I experience the same problem with a stripped down version containing only one entry. I can send you that file, along with the PDF file. How do you suggest I get this to yo...

After updating an XML file used by a LiveCycle Designer ES4 form, I used to be able to import it into Acrobat Pro using Edit > Form Options > Import Data. This worked up until a couple of months ago, but now the XML file looks corrupted on import: <staff> </staff> </it> </it> </admin> ...etc....