Hi Guilaz
The flat-file disassembler is parsing your flat-file and as per your schema is expecting to find a line feed character (0x0A) as the next character. Instead, it reaches the end of the file. The file does not therefore match the schema, so you receive the error above.
You should spend some time reviewing the contents of the file itself using a Hex viewer (I can recommend the excellent – and free – Hex Editor by HHD Software) to ensure that the final character is in-fact a line-feed. Alternatively, the Flat-File wizard introduced in BizTalk Server 2006 is an excellent tool to generate flat-file schemas, however I’m a bit of a purist and like to write them by hand, in Notepad… (only kidding 😉
If you’re still having no luck, I would also second Parshant’s request to post your schema and a sample file to this forum and we will try and help further.
Regards, Nick.