git did not exit cleanly

[excore 0]

When trying to pull to update my local copy of hercules, tortoise git shows me this error

 

git did not exit cleanly (exit code 1) (2028 ms @ 12/8/2013 2:28:40 PM)

 

[jaBote 438]

Try to do that again, and scroll a bit up on that window since it usually gives you some more information.

[excore 0]

Hi there. So this is what it showed when I scrolled up.

 

Please, commit your changes or stash them before you can merge.Aborting

[jaBote 438]

You didn't commit your changes before updating (pulling). Please refer to this: http://herc.ws/board/topic/152-obtaining-hercules/?p=1241