A bug introduced with LiveCycle Designer ES Update 1 (8.2) is now fixed in LiveCycle service pack 2 and the Acrobat 9.1 update. The bug causes a processing instruction ex. <?templateDesigner StyleID aped3?> to get copied repeatedly while working with the form. This can lead to extremely large file sizes and sometime causes crashes. The fix removes duplicate StyleID’s found in existing forms and prevents them from being created.
If you installed LiveCycle Designer with LiveCycle Workbench or as a stand alone product and have a maintence and support agreement in place please contact Adobe Enterprise Support .