You will need to update to v14.7.7, if not there now. You will have to install the 14.1.0 update first, then you can use the 14.7.7 update. Search for these updaters:
Office2011-1410UpdateEN.dmg
Office2011-1477Update_EN-US.dmg
I used to have my Office install on a separate storage partition from the working OS's (so if the OS hammers and it will, all I have to recover is the OS) and Alias'd the User Data folder to the Documents folder. But these days it's becoming too risky. So I install Office in the working OS and copy the Database to the Documents folder. This will also increase the size of TimeMachine back ups if you have a large Office database. So beware, it's the nature of the beast.
If you are operating from another partition you will need to copy over your database folder for Office: Previous Working Install/Documents/Microsoft User Data to ~ (User in the current OS)/Documents/ . Since you have fired up Office, even though it failed, it should/may have made this folder that you will have to write over the folder (with all Office apps closed) that "has no data in it" with the one that does. If you have a database from an earlier version, i.e.: Office 2008, it will "update" the database to 2011 and you will have two "Identity" folders: one for Office 2008 (your old database) and the new Office 2011. OF WHICH if you are going to Office 2016, you will need to update the database to 2011 first, then move it to or install Office 2016 over 2011 and have 2016 update it again. You can archive the previous databases. But you have to go 2008 to 2011 to 2016. This is the only way it will work to get from 2008 to 2016 or further. They assume that you have been diligent in keeping up to date with their releases even though it may have not been "affordable". MS will try to push you to Office 365 which a lot of people are not liking. I don't care for 2016, much less 365. I have been using Office 2008 in Mojavé, but updated to 2011 since my database was so old and I feared it would eventually corrupt. Otherwise, I would have stayed in 2008. This is where I discovered that Office 2008 has a far better set of applications. As the Office's have been released they have stripped out the best features that were in the previous versions. That's why I will not be going to 2016.
Hope this helps . . .