System.MissingMethodException: Method not found: 'PRCoreInterface.IPRNPCInteraction
PRModuleInterface.IExtensionHost.get_NPCInteraction()'.

   at PRModuleLibrary.PRModule.SellerClass.GetState()

   at PRModuleLibrary.PRModule.SellerClass.Pulse() in
C:\Users\caytchen\Desktop\Production-Requiem\waltz\Selling\Seller Pulse.cs:line 47

   at PRModuleLibrary.PRModule.WaltzStateHandler() in
C:\Users\caytchen\Desktop\Production-Requiem\waltz\Waltzmain.cs:line 118

   at PRModuleLibrary.PRModule.Pulse() in
C:\Users\caytchen\Desktop\Production-Requiem\waltz\Waltzmain.cs:line 69

   at ISXRequiem.ISXRequiem.Main(String[] args) in C:\Documents and
Settings\Administrator\Desktop\reqidev\RequiemCore\ISXRequiem\ISXRequiem.cs:line 117
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)