Please follow these steps to fix this issue.
Please rename Caps folder from this location and relaunch AAM. It should give you option to Install all the Applications.
C:\Program Files (x86)\Common Files\Adobe
Please let me know if it helps you or not.
Hi, yes I renamed the folder 'caps' to 'capss' which has now given me the option to install so should be good from here.
Yes you are good to go....Just needed to know that how many softwares have to installed on this Machine, if more then 1 then after installing Illustrator please undo the changes with the Caps Folder.