FlyButanol

Try disabling NextGen Gallery as described in other threads here.

Try disabling NextGen Gallery as described in other threads here.

Try disabling NextGen Gallery, as reported in other threads here.

Apparently the NextGen Gallery is causing a conflict. Deactivating that gallery enabled the Calendar. Since we don’t use it very much, that is an acceptable workaround for us.

I’m seeing the same thing.

We are experiencing the same issue. Can’t add or modify events. The pop-up window appears, but none of the actions work after updating data. Can’t save, cancel, delete, or even close the pop-up. Have to refresh the browser window, which returns to the opening calendar screen with the current month, even if you were on a different month. The calendar can’t be modified right now.