I kind of doubt you're on the latest version of AE. It sounds like you might have version 12.
Unless you updated yesterday, in which case you have version 13.5......
As Dave says, you are certainly not using the most recent version of After Effects. I can see buttons in the user interface that don't exist in the latest version.
Tell us the exact version number of After Effects that you are using.
You have After Effects CC which is version 12. You are nowhere close to up to date.
Go to your CC software and download either After Effects CC 2014 (which is version 13) or After Effects CC 2015 (which is version 13.5).
Beware that CC 2015 has some VERY FUNDAMENTAL differences, so you'll want to make sure to keep your old version. Read this first before downloading the new version.
Read this for how to download version 13 (it's similar enough to your version 12 that you won't be likely to have any problems, whereas the HUGE differences in version 13.5 might cause issues for you.