I am trying to download the adobe application Manager so I can fix my adobe after effects cs6, but it will not let me install it.

Thats okay

Please try with below steps :

Step 1 :

Launch Activity Monitor from Utilities, make sure no Adobe processes are running like AAMUpdater , Creative Cloud ,COreSync, Install ,Setup, PDApp, Adobe Crash Demon....etc Force Quit all Adobe processes.

Step 2 :

1) Right click on Finder icon and  select "Go-To" Folder option.
2) You will get a text box, type-in below command and then hit 'Return' key.

/library

3)Then navigate to Application Support>Adobe.

Open Adobe folder and locate folder named OOBE and rename it to OOBE-old.

Step 3 :

If present trash Adobe application manager folder from Utilities.

( It is necessary to trash Adobe Application manage , rather than overwriting it just by installing Adobe Application Manager)

If it is affordable , replacement/ fresh installation  is better than repair hehe

Step 4 :

Click on the below link and download Adobe application manager and install the same .

http://download.adobe.com/pub/adobe/creativesuite/cc/mac/ApplicationManager9.0_all.dmg

( If you had already downloaded installer file , no need to download again )

If you are able to install Adobe Application manager , once the installation process is complete, make sure to update it.

You will be able to see Adobe Application manager launch icon inside Applications folder once the installation is success. double click on it , it will update .