Scheduling SSIS with Web Reference in Script Component fails.

Question

I'm using SSIS on an SQL Server 2014 to create invoices in Microsoft Dynamics NAV 2015.
To create the invoices in NAV I use their Web services via a Script Component.
The reference is added using "Add Service Reference" - Advanced - "Add Web Reference" all according to the Dynamics NAV documentation. Found here: https://msdn.microsoft.com/en-us/library/dd355316(v=nav.80).aspx
FYI: You cannot add it as a "Service reference" but have to use the older "Web Reference"
The package will run without any problem in Visual Studio but as soon as I Deploy the Package and try to schedule it the package fails on the Script Component with the error:
"The binary code for the script not found. Please open the script in the designer by clicking Edit Script button and make sure it builds successfully."
I've tried to run the package in both using the 32bit and 64bit runtime. I have also tried to copy the content of the reference.cs from the reference and added it to a new class according to the steps below. But I still get the same error.
1. Open Script component 'Select all files' icon in the solution explore
2. Drill down to webreference, and locate reference.cs file3. Copy the content of this file to a new class file.4.
Delete the webreference5 .Recompile your code, save and exit6. Open the project to verify that the reference is saved.
Environment information:
Windows Server 2012 R2 64 bit (x64) 
SQL Server 2014 Enterprise Edition  (12.0.2000.8)
/Fredrik

Answer 1

The code builds successfully in VSTA.
When I now try to deploy it to my "Integration Services Catalog" on my dev machine the package will execute without problem. When I deploy it to the production server I get the error. When scheduling on the production server I've created Credentials
and a Proxy with my own user (same as on my dev machine).
The production server has access to the web service that I'm trying to call (they are on the same domain network).
I have managed to get rid of the error in one package using the technique below. But to me this just seemst to be a strange workaround.
1. Open Script component 'Select all files' icon in the solution explore
2. Drill down to webreference, and locate reference.cs file3. Copy the content of this file to a new class file.4.
Delete the webreference5 .Recompile your code, save and exit6. Open the project to verify that the reference is saved.