Getting " Error Message: "Can't rez object because the owner does not allow it" - on my own Mainland

[Miko Kuramoto]

Anyone know what this is? No i dont have it group owned, no i dont need to wear a group tag, and it's my own free 512m parcel on mainland.  It's getting annoying to have to re-log and find it in my Lost and Found Folder.  And yes my hardwired internet is running well, minimal latency (55fps), everything is else is fine. Thanks for any suggestions. 

[Marigold Devin]

Sometimes there are neighbouring items - often trees - that have an invisible box around them that can be blocking your own object's way, and so the system sees it as you trying to rez items outside of your own land.

Be very precise where you are rezzing.  Use "ctrl" "alt" "t" to see if there are prims from neighbouring land encroaching on your own.