The last two weeks were quite puzzling because I couldn't align my [Celestron] AVX mount, and I have been using ASIAir for about half-a-year.  I always performed a two-star alignment (with two calibration stars) and then proceeded with the "all-star polar alignment" using the hand controller.  On the second iteration, I connect ASIAir just before performing the two-star alignment.  This is so ASIAir becomes synced with the mount.
  
But ASIAir was just updated last month (and I couldn't roll back to the old version).  Now, for some reason, ASIAir interferes with the two-star alignment and I can't even align the first star.  (It slews way past it, or way ahead of it, or something).  I didn't know what was going on for the longest time.  I thought my mount had bad firmware, but I just had it updated through Celestron's tech support earlier this year.  I thought "How am I going to convince tech support I need to revert back to my old firmware."
 
Then.., I caught it.  It just took some old-fashion troubleshooting.  I completely left ASIAir out-of-the picture (didn't connect it) and my mount went back into normal service.  In fact, it was spot-on.
  
What a load off my mind !
I adjusted my routine afterwards and instead of connecting ASIAir on the second iteration, I just leave it out.  Instead I  power-cycle the mount for a third iteration, but instead of a two-star alignment, I simply opt for 'quick-align'.  (The mount is completely aligned since it was polar aligned using two iterations).  ASIAir likes being synced with 'quick-align' so I let it have its way.  (Temperamental software).