Looks like the obj is being opened in a text editor. No big deal if that's what it is. Save it as an obj, or rename it after saving to the .obj extension and try and import it. I set my preferences to open .obj in one of the notepad/wordpad options so that I could edit easily. So every time I double click an obj it opens in the text editor. Others might have done the same. Zip as suggested above to avoid this.