Server Launching

When I launch the server I get a large amount of error messages such as: ERROR StatusLogger Unrecognized format specifier [d](many different letters and words in the square brackets)
ERROR StatusLogger Unrecognized conversion specefier [d] starting at position 16 in conversion pattern.

I am not sure if that's an issue with my system or if it's a Minecraft issue. I have tested to see if it was world related or java or minecraft and it seems to be the snapshot because 14w26c works fine.