We have a number of dynamic XFA (PDF) forms we have sent out to end users. Those end users are in the process of upgrading to Adobe Reader 11.0.07 (Windows, Released 5/13). However upon upgrading, the users when opening the form get a number of modal dialogs with a notice stating "Bad parameter." There can be many dialogs with this same error, one after another. When the errors cease, instead of the actual form being displayed, a boilerplate message notifying the user that they need to upgrade to Adobe Reader 8 appears (see below).
I've tried changing a number of form fields and parameters, but nothing seems to affect the outcome. Does anyone else have this issue?