Bought MC CS6, Acrobat XI came out, cannot use Acrobat X

Question

I bought Master Collection CS6 about 3 months ago. Acrobat X stopped working today. Acrobat X which I paid for is no longer available in Adobe Application Manager, only Acrobat XI which I do not want to pay for.
I am currently re-installing from the original MC CS6 installer. Who knows, maybe it will work?
If not, what do I do?
Update: Acrobat X Pro allowed me to install an update and I am currently able to use it. I am afraid something bad will happen since it is no longer available in Adobe Application Manager.

Answer 1

Thanks Karan.
Here is what happened and why I was confused.
I was into about the 9th hour of a long day of work, thinking of every way possible to reduce the number of hours until the day's work was done. I had a few files open in Acrobat X Pro when it barfed and stopped working. I shut several programs down and rebooted, hoping Acrobat would just work again.
When the machine rebooted and I logged in, Acrobat X Pro was gone! It was uninstalled by Adobe Application Mangler or Updater or something. In its place in the Start menu was Acrobat XI Pro. I thought to myself, cool, Adobe is giving me a free version upgrade of Acrobat because they appreciate the money I spent on MC CS6.
I started up Acrobat XI Pro, thinking my day's work would soon be progressing and was greeted by a Trial Version screen. I had not done anything to initiate this. I entered the CS6 license key and it refused to license. To me it looked like Adobe just decided it was time for me to pay more money, for something I didn't even want, I mean, my Acrobat X Pro was kidnapped and thrown in the trash!
So, because I am above average in intelligence I will run the stupid Adobe Aplication Mangler and if I can guess the right buttons to push I would soon be able to get back to work. Well, Acrobat X Pro, which i had purchased, was not an option in the list of software I could install. Why not? I had done nothing to initiate this.
Well, being way above average intelligence, I found the decompressed installer for CS6 and ran set up. I did not have a clue what I would find here, and I had certainly never been told the Adobe Application Manager was only for online subscriptions, it seemed to be the place to go if you were hyper smart like me. Somehow Adobe had neglected to eliminate this option when it deleted Acrobat X Pro from my system, I felt like I was getting away with something and would probably have to pay a price for my insolence down the road.
Acrobat X Pro installed and licensed okay, then I chose Help->Updates and to my surprise Adobe Application Mangler let me update it, surely an oversight on Adobe's part I thought. I mean I might be able to get work done again.
So I was afraid and hit the forums. There I read that if Acrobat stopped working then just install everything from Adobe Application Mangler and my software would not suddenly stop working in the future. Of course, I could not install Acrobat X Pro from AAM, so I still don't know if things will decide to commit suicide in the future and I will have to spend hours again getting things working.
I think you need to explain very clearly why this occured to me, why Acrobat X Pro went away without any action on my part, and what I can do to avoid this when the next version of Acrobat Pro comes out.
Thank you,
-Gary