Google Product Forums
Re: Google+ Instant Upload not uploading photos and videos after upgrading to Android 4.0 (Nexus S)
Jan 14, 2012 2:41 PM
Posted in group:
Google Mobile Help Forum
Android Devices : Other Google Products :
Turns out I was getting this because I had disabled 'Sync Google Photos' in 'Accounts and Sync'. You might try this.