Re: Flat File Disassembler failes, if the incoming document contains these characters , ie. character above letter u ( Schürmattstrasse 5)

You probably have the wrong encoding when processing the file. Here's a description of how the Flat File disassembler guesses the encoding of the received message and what you can use to signal it to use the right encoding:

http://www.winterdom.com/weblog/2005/09/08/SelectingTheEncodingUsedWhenParsingFlatFiles.aspx