Chuck, Thanks for the hint about braillePageNumber . This was a liblouisutdml problem. The error message indicated that it was in one of the binary libraries. It has been fixed and the fix has been verified by running the program with a test configuration file. John -- John J. Boyer; President, Chief Software Developer Abilitiessoft, Inc. http://www.abilitiessoft.com Madison, Wisconsin USA Developing software for people with disabilities