The error message that shows when loading an existing world shows a clearly visible carriage return [CR] character as shown in the attached image.
Might be a bug with farseek instead, but I am guessing that it appends an extra '\r' where it isn't needed. Only tested this on Windows where a new line should be '\r\n'.

Versions used:
Streams-1.9.4-0.3.jar
Farseek-1.9.4-2.0.jar

Thanks for reporting! This is fixed in Farseek v.2.1.