After a failure to move the digtron with its metadata, some nodes were
broken. This worked around crashes that occurred if the inventory table
was missing.
There have been reports of large, distant-from-player Digtrons apparently failing to completely write their layouts to the map, resulting in an inconsistency.
This adds an attempt to brute-force a solution. When a map write fails it will be retried until it succeeds, or until 1 second elapses (at which point the write is aborted in a hopefully somewhat clean manner).
