world crashed

Hi.
I don't have any ideas how to fix it. I tried lots of things like:
- deleting all TimeSpaces
- deleting some items (like flowers which give quests) from drop
- changing dropType to automaticly going inside EQ (MonsterType 6)
- and some other.

I have error:

Quote:

<log4net:event logger="OpenNos.World.Program" timestamp="2017-12-21T23:26:30.4074747+01:00" level="ERROR" thread="23" domain="OpenNos.World.exe" username="WIN-9OQQCGNOPKF\Administrator"><log4net:message>[unhandledExceptionHandler]: Object reference not set to an instance of an object.</log4net:message><log4net:properties><log4net:data name="log4net:Identity" value="" /><log4net:data name="log4net:UserName" value="WIN-9OQQCGNOPKF\Administrator" /><log4net:data name="log4net:HostName" value="WIN-9OQQCGNOPKF" /></log4net:properties><log4net:exception><![CDATA[System.NullReferenceException: Object reference not set to an instance of an object. at OpenNos.Handler.BasicPacketHandler.GetRStart(RStar tPacket rStartPacket) in C:\Users\Administrator\Desktop\OpenNos\OpenNos.Han dler\BasicPacketHandler.cs:line 478 at lambda_method(Closure , Object , Object ) at OpenNos.GameObject.ClientSession.triggerHandler(St ring packetHeader, String packet, Boolean force, Boolean ignoreAuthority) in C:\Users\Administrator\Desktop\OpenNos\OpenNos.Gam eObject\Networking\ClientSession.cs:line 546 at OpenNos.GameObject.ClientSession.handlePackets() in C:\Users\Administrator\Desktop\OpenNos\OpenNos.Gam eObject\Networking\ClientSession.cs:line 449 at OpenNos.GameObject.ClientSession.<.ctor>b__12_0(In t64 x) in C:\Users\Administrator\Desktop\OpenNos\OpenNos.Gam eObject\Networking\ClientSession.cs:line 86 at System.Reactive.AnonymousSafeObserver`1.OnNext(T value) in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\AnonymousSaf eObserver.cs:line 45 at System.Reactive.Linq.ObservableImpl.Timer.Periodic ._.Tick(Int64 count) in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\Linq\Observa ble\Timer.cs:line 175 at System.Reactive.Concurrency.DefaultScheduler.<>c__ DisplayClass7_0`1.<SchedulePeriodic>b__1() in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\Concurrency\ DefaultScheduler.cs:line 114 at System.Reactive.Concurrency.AsyncLock.Wait(Action action) in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\Concurrency\ AsyncLock.cs:line 71 at System.Reactive.Concurrency.DefaultScheduler.<>c__ DisplayClass7_0`1.<SchedulePeriodic>b__0() in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\Concurrency\ DefaultScheduler.cs:line 112 at System.Reactive.Concurrency.ConcurrencyAbstraction LayerImpl.PeriodicTimer.Tick(Object state) in C:\projects\rx-net\Rx.NET\Source\src\System.Reactive\Concurrency\ ConcurrencyAbstractionLayerImpl.cs:line 198 at System.Threading.TimerQueueTimer.CallCallbackInCon text(Object state) at System.Threading.ExecutionContext.RunInternal(Exec utionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionCon text executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.TimerQueueTimer.CallCallback() at System.Threading.TimerQueueTimer.Fire() at System.Threading.TimerQueue.FireQueuedTimerComplet ion(Object state) at System.Threading.QueueUserWorkItemCallback.System. Threading.IThreadPoolWorkItem.ExecuteWorkItem() at System.Threading.ThreadPoolWorkQueue.Dispatch() at System.Threading._ThreadPoolWaitCallback.PerformWa itCallback()]]></log4net:exception></log4net:event>

any ideas?

It says in log file that you aren't setting reference variable to point to any object so you should fix that. See in code if you have blank ref .