Well, that's a shame. But it was just a test for one company, after all, and it taught you a lot about the kinds of difficulties potential clients will want or need you to address. Not to say you shouldn't do the computer thing, but quitting after a single set back (especially such as this, which barely qualifies) won't get you ten feet in the bumper cars of life. Chin up, and keep at it! You've got what it takes.