FOR EXAMPLE:

./stegextract image_name.jpg ---> WORKS

./stegextract image\ name.jpg ---> DOES NOT WORK

clearly this is as easy as just renaming the file you are trying to work with and is not necessarily a problem with stegextract, however I wanted to formally document this here because I a couple hours trying to figure out what I was doing wrong before realizing how simple the problem was xD