Solved NullReferenceException with corrupt map

hey guys i got a hard problem : / got my shard offline and the ppl is fucking my ears so:

[3/30/2015 9:57:51 AM] Loading Save From server/JuegaRust/save/Procedural Map_4000_2147483648/0.sav
[3/30/2015 9:57:55 AM] Destroyed 13493 old entities
[3/30/2015 9:57:55 AM] Creating 42782 entities from save
[3/30/2015 9:57:57 AM] Spawning 42782 entities
[3/30/2015 9:57:59 AM] NullReferenceException: Object reference not set to an instance of an object
[3/30/2015 9:58:00 AM] Unsupported encoding: 'utf8'
[3/30/2015 9:58:01 AM] [event] events/cargo_plane

I cant put my shard ONLINE again for this ERROR, I tried many things but to no avail, please brothers help me, i got 15 players normally and wanna put ON, thanks again and sorry my english, im spanish