System.NullReferenceException: Object reference not set to an instance of an object.

   at PRCoreLibrary.PRNPCInteraction.get_CurrentJobType() in C:\Documents and
Settings\Administrator\Desktop\reqidev\RequiemCore\PRCore\Classes\NPC\Interaction.cs:line 653

   at PRModuleLibrary.PRModule.SellerClass.GetState() in C:\Documents and
Settings\Administrator\Desktop\reqidev\waltz\Selling\Seller Pulse.cs:line 17

   at PRModuleLibrary.PRModule.SellerClass.Pulse() in C:\Documents and
Settings\Administrator\Desktop\reqidev\waltz\Selling\Seller Pulse.cs:line 42

   at PRModuleLibrary.PRModule.WaltzStateHandler() in C:\Documents and
Settings\Administrator\Desktop\reqidev\waltz\Waltzmain.cs:line 100

   at PRModuleLibrary.PRModule.Pulse() in C:\Documents and
Settings\Administrator\Desktop\reqidev\waltz\Waltzmain.cs:line 67

   at ISXRequiem.ISXRequiem.Main(String[] args) in C:\Documents and
Settings\Administrator\Desktop\reqidev\RequiemCore\ISXRequiem\ISXRequiem.cs:line 86
Exception unloading domain: System.CannotUnloadAppDomainException: Error while unloading
appdomain. (Exception from HRESULT: 0x80131015)

   at System.AppDomain.Unload(AppDomain domain)

   at LavishVMRuntime.LVMDomainManager.DomainUnloader(Object Obj)