After adding behaviors

So what do you do after adding a behavior? I added the .cs and .jm but I keep on getting this wserver error:
[17:35:33] System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.ThrowHelper.ThrowKeyNotFoundException()
at System.Collections.Generic.Dictionary`2.get_Item(T Key key)
at wServer.logic.behaviors.TransformOnDeath..ctor(Str ing target, Int32 min, Int32 max, Double probability, Boolean returnToSpawn) in C:\Users\Benjamin\Downloads\fabiano-swagger-of-doom-master\fabiano-swagger-of-doom-master\wServer\logic\behaviors\TransformOnDeath.cs :line 20
at wServer.logic.BehaviorDb.<>c.<.ctor>b__35_1() in C:\Users\Benjamin\Downloads\fabiano-swagger-of-doom-master\fabiano-swagger-of-doom-master\wServer\logic\db\BehaviorDb.PuppetMaster'sE ncore.cs:line 9
at wServer.logic.BehaviorDb..ctor(RealmManager manager) in C:\Users\Benjamin\Downloads\fabiano-swagger-of-doom-master\fabiano-swagger-of-doom-master\wServer\logic\BehaviorDb.cs:line 64
at wServer.realm.RealmManager.Initialize() in C:\Users\Benjamin\Downloads\fabiano-swagger-of-doom-master\fabiano-swagger-of-doom-master\wServer\realm\RealmManager.cs:line 225
at wServer.Program.Main(String[] args) in C:\Users\Benjamin\Downloads\fabiano-swagger-of-doom-master\fabiano-swagger-of-doom-master\wServer\Program.cs:line 55

In general, what do you do after adding your behavior?

Help anyone?

Also, I was wondering whether there could be a new section where you just post your skype if you want to help someone.