Oh I see, it's just my standard response to a zip upload. We get a few of those. <img src="smileys/smiley1.gif" border="0" align="middle" /> The .capx is a renamed .zip file, but I've seen them not open correctly on some hosts before, so I know what you mean. Most of us use dropbox so we don't have that problem.
I think classic is pretty much the same, but I can't really answer that, never used it.
If you use the bullet behaviour, the object will move forward along it's angle. Then you just set the angle by using the action "Set angle towards position 'Player.X, Player.Y'".
Edit: Well, I guess you edited your post before I replied, so if anyone's wondering, that's why my post is totally unrelated to the above. <img src="smileys/smiley36.gif" border="0" align="middle" />
To make him stop, just use the distance expression again, if he's close enough, he stops moving and attacks instead.