Do you mean what held me back from getting in anywhere--or why have I been held back in general from making any sort of decision since my med school rejections and moving forward? I'll address both.
I completed a post-bacc, took the MCAT, and applied. I did not get any interviews. Thinking it was my MCAT, I re-took, but barely did better (25, then 26). I took Kaplan both times, but clearly there is something about the MCAT that I don't get. I think what it is is that although I did excellent in my post-bacc, I don't have that fundamental scientific problem-solving ability, and when faced with new situations on the MCAT, I don't know what to do. Personally, I think this means I do not have the right level of scientific acumen. I'm good at memorizing, but not good at problem-solving. Can I figure out how to be a better problem-solver in time to do great on a third MCAT? I really don't know.
So after I got my round of med school rejections (3 years ago), I was crushed. But I decided to dust off the MCAT review books and try it again, studying even harder. After I got this MCAT score I was even more crushed. At that point I decided to look elsewhere career-wise because I did not have the motivation to study for the MCAT a third time, and since I applied only to the schools with the lowest scores/GPA averages, etc. I figured I didn't have a chance of getting in anywhere. So I did a variety of jobs/careers for awhile, and then for the past year have really been soul-searching. I got a job back in the hospital, and absolutey love it. But I've been looking into other careers in healthcare that are easier to get into. But my passion for medicine is still there. Thus I feel stuck. Also, I have not been able to get the jobs I want with my JD, because I keep being told I'm "overqualified" or in some cases "underqualified." As a result for awhile I was working in retail.
I really think you should get a new advisor; after all, he/she didn't try to stop you from applying twice when your MCAT score wasn't really up to par for allopathic medical schools. That's akin to setting you up for failure. Based on that, your outcome isn't really all
that surprising. Even though it's not impossible, it's highly improbable that you'd get an interview and get in with a 25/26 MCAT, especially with a 7 in PS. The average MCAT for an allopathic matriculant, as I'm sure you know, is about 30. The reason, I suspect, that you didn't receive any interviews is mainly because of your MCAT score. In allopathic admissions, the two most important factors are your MCAT score and your UGPA.
Anyway, as I mentioned in the other thread, I'd recommend retaking your MCAT, but not until you are comfortably averaging 30+ on practice tests. I think it probably wouldn't be worth your time and effort otherwise. I used Kaplan, too, and while I think they are good for motivation, which I definitely benefitted from, I don't think they really helped me a whole lot for the actual MCAT, particularly with the PS and VR sections. I was actually shocked when I took the actual test, since it ended up being a lot less knowledge-based and more about analysis. The actual format was somewhat different than what I had expected. Kaplan's VR isn't anything like the real MCAT VR section and it's PS section is a lot more calculation-based than the real test, which seemed more concept and analysis-based. I highly recommend buying and taking all of the AAMC practice tests under real conditions, doing all of Kaplan's Qbank questions, and going into Kaplan's test center and doing all of the AAMC additional problems. Basically, you can't do enough problems and can't be exposed to the AAMC testing style enough. Talk to some of the folks in the SDN MCAT forum; there are some real crack-shots there. Fortunately, as others might have already alluded to, the PS section is the easiest to improve.
I alluded to this in the other thread, too, but have you considered applying to osteopathic medical schools? Your current MCAT score is actually competitive for some DO schools. While, it's best to score as well as you can, even for application to DO schools, I think if you can get your MCAT to about 28+ and applied early and broadly enough, you'd actually get quite a few knocks at your door from osteopathic medical schools; heck, you'd probably get your pick of school to attend. If you simply stayed at 26, you'd still have a good shot at DO schools, you just might not have as many options. Just something to keep in mind.
Good luck, no matter what you choose.