Bit of an optimistic ask being that this post was some time ago, but did you get any definitive resolution to this?
I'm afraid not. It just started working one day, and never gave me any trouble after. And as far as I know, I didn't change anything between when it didn't work and when it started working. 
If KUKA offers you anything concrete, please let us know.
Managed to get this resolved, but I didn't find help from KUKA's technical hotline particularly useful if I am honest.
The only actions that I took were to re-deploy the WV project to the controller (which I hadn't made any changes to that were different to permutations I had tried previously) and to create a "test" file using the ConveyorTech template for a new program. So, I believe the "fix" has been one of two things: either, much like yourself, SkyeFire, I've just toggled things on and off and it seems to have spontaneously rectified the issue; or adding in that test file using the CT template is a pre-requisite for the CT configuration.
I am writing this to update, but I got it working a couple of weeks before Christmas. So, I am writing from memory; however, if my memory serves me correctly, there is no allusion to the need to create that test file prior to configuration. From memory and having had another quick scan of the manual, Chapter 9 is Configuration and Chapter 10 is Programming - the first instance where using the CT program template is mentioned in the manual is in Ch 10. If this is the root of the issue, then the instructions given in the manual are asynchronous for what you need to do. If not, I think this KOP is maybe just a bit temperamental.
