Creating testing flat file schema

I have created a flat file schema & dictionary identical to one in WmFlat file tutorial. In the WmFlatFileTutorial, sample service works well. When i try to test the identical schema i created with the same flat file it gives no valid records.
This is stunning. If i copy the service to my Test folder , and rename it , it works fine with the sample file.

Can anybody suggest me what could be the reason.
I have followed and developed as per the tutorial guidelines.

check your delimiters, and the allow undefined data.