I keep getting some of my flights rejected by olc with this message:

IGC-file cannot be read or has wrong format! Please send the file via
eMail to
Error by parsing IGC-File; Error by B-Record:
B2312064540367N12131900WA0019700183LLXNNOREC180SEC _326676154_326675526 ;
For input string: "NNO"

Can anyone explain what is happening? I've sent the files to the olc
help many times but never get any response

Boggs.