Not installed but saying up to date

Hi, one of the programs (Illustrator) may have been interupted during download/installation.

In grey it is saying 'up to date' yet it is not installed on the machine.

There's therefore nothing for me to uninstall and start again and indeed no option (being the 'up to date' message is greyed out and unclickable) to reinstall.

Any help much appreciated.

Thanks