Presently we use LiveCycle forms in some of our applications to collect
information. From time to time we have problems with people in the field
us that versions of Reader that cause the forms to not work properly.
Ex: They'll have an extremely old version of reader or the latest issue
was Reader DC that caused issues with our forms (specifically buttons
that communicated with SAP). I was so excited that ES4 could render in
the usual PDF Reader or HTML5 in any Web Browser however it presently
do...