Created Unassigned: Terramap isn't loading my world! [43184]

Hello, and randomly around 30 minutes ago Terramap started to not let me get into one of my worlds (And only this world). Every time, it gave me this error:

System.Exception: World file tiles list start is not where it's expected to be. Expected: 2604 Actual: 2594
at System.Runtime.CompilerServices.AsyncServices.<ThrowAsync>b__0(Object state)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)

Version: 1.3.12.26342