The forms are just standard word documents that are then converted to PDF's with Adobe Acrobat 6.0 Professional, version 6.0.2. The client then uses LiveCycle Designer 7.0 to open the PDF and add or modify form fields. The error occurs when launching livecycle designer. It will either open the document in the editable format or it will return the .....(Library returned system code 1, error code 21. English test was "this direct object already has a container"). It will work for 1-2 weeks then quit and start giving the error.