version1.1.3.0 is an optional beta release mainly designed to help sys admin types. Some code tweaks were added in that provide for an efficient way to block connecting to nodes that are on the wrong chain/block height.

With a pool/masternode/exchange it creates headaches without this ability to block. Unfortunately there will be users out there who do not update to the new version and this is the root cause of the issue and we have no way to control this as we just can't force people to update...