could not generate Xrm.cs due a script error

Thanks in advance

This is the error

Exiting program with exception: Could not load provider of type 'Microsoft.Xrm.C
lient.CodeGeneration.CodeCustomization, Microsoft.Xrm.Client.CodeGeneration'
CrmSvcUtil Error: 2 : Exiting program with exit code 2 due to exception : System
.NotSupportedException: Could not load provider of type 'Microsoft.Xrm.Client.Co
deGeneration.CodeCustomization, Microsoft.Xrm.Client.CodeGeneration'
at Microsoft.Crm.Services.Utility.ServiceFactory.CreateInstance[TIService](TI
Service defaultServiceInstance, String parameterValue, CrmSvcUtilParameters para
meters)
at Microsoft.Crm.Services.Utility.ServiceProvider.InitializeServices(CrmSvcUt
ilParameters parameters)
at Microsoft.Crm.Services.Utility.CrmSvcUtil.get_ServiceProvider()
at Microsoft.Crm.Services.Utility.CrmSvcUtil.Run()
at Microsoft.Crm.Services.Utility.CrmSvcUtil.Main(String[] args)
CrmSvcUtil Error: 2 : ===== DETAIL ======
CrmSvcUtil Error: 2 : Source : CrmSvcUtil
Method : CreateInstance
Date : 5:15:02 PM
Time : 8/4/2016
Error : Could not load provider of type 'Microsoft.Xrm.Client.CodeGeneration.C
odeCustomization, Microsoft.Xrm.Client.CodeGeneration'
Stack Trace : at Microsoft.Crm.Services.Utility.ServiceFactory.CreateInstanc
e[TIService](TIService defaultServiceInstance, String parameterValue, CrmSvcUtil
Parameters parameters)
at Microsoft.Crm.Services.Utility.ServiceProvider.InitializeServices(CrmSvcUt
ilParameters parameters)
at Microsoft.Crm.Services.Utility.CrmSvcUtil.get_ServiceProvider()
at Microsoft.Crm.Services.Utility.CrmSvcUtil.Run()
at Microsoft.Crm.Services.Utility.CrmSvcUtil.Main(String[] args)
================================================================================
======================================