Photos won't create new "moments"

Please update Photos to the current version, which is 1.5. It resolves many issues present in the earlier versions.

We can not see you so you have to provide details

but

You are 5 upgrades behind so you really should upgrade to the current vereion - OS X 10.11.5 and Photos 1.5

For your specific issue my guess is your camera setting are incorrect so you are simply not seeing the new moments - in All Photos vies right click on a photo and show moment - Moments should open and your image be shown and if the camera setting are wrong you should see what is going on - if Moments opens and your photo is not there then you have a corrupted database - in this case backup your Photos Library and then hold down the option and command keys while launching Photos and rebuild the database (this will trigger a new upload of all photos to verify the iCloud.com library if you are using iClour Photo Library)

LN

I am using Photos 1.0.1, on OS X 10.10.5 (Yosemite). For some reason, in the "Photos" view of the Photos program, there have been no new "moments" created since mid-March, even though I have imported a bunch of pictures taken since then. The photos can be viewed, for example, under "Albums" "All Photos" but they don't appear in the "Photos view" because there have been no new "moments" created under which they would be filed. Can someone help?

To test LarryHN's suspicion, that the data and time in the camera have been set incorrectly, select one of the photos you are seeing in the All Photos album, but not in the Moments. Ctrl-click it or right-click, then select "Show in Moment" from the pop-up menu. If the photo shoild be in a wrong moment you should be seeing it this way.

Sometimes photos are appearing to be missing from the Moments, simply because the Photos Preference > Summarize Photos has been enabled. Then quite a few few photos might be omitted from the moments and collections.

If the photos cannot be revealed by "Show in Moment", repair your Photos Library. That has frequently helped to fix the "Missing in Moments" problem. But don't repair without having a current backup of your Photos Library. If you are using iCloud Photo Library, repairing will cause the library to upload again to iCloud. This cannot be avoided. https://help.apple.com/photos/mac/1.0/?lang=en#/pht6be18f93

• If Photos is open, choose Photos > Quit Photos.
• Press Option-Command and double-click the Photos icon in the Applications folder (or click the Photos icon in the Dock).The Repair Library window opens.
• Click Repair to rebuild your photo library.