Yes that makes sense. The default version used is .NET 4.x unless you excplitly specify another version. Again - this is clearly outlined in the documentation right in the home topic.

+++ Rick ---

>>Of course it's required. Otherwise what would you be calling?
>>
>>wwDotnetBridge supports .NET 2.0 and .NET 4.0 (along with the sub-versions that entails (ie. 3.0/3.5, 4.5, 4.5.x and 4.6).
>>
>>I recommend you review the documentation at:
>>
>>* Documentation
>>
>>* White Paper
>>
>>
>It was failing for a customer with Windows 7. Only after the client support person installed .NET 4.5.2 it worked. From that email
>
>
>I believe that it is Windows 7, which is installed with .NET 3.5.1. I tested on a Win7 VM by uninstalling .NET 4.5.2 and turning off 3.5.1. Then started adding the 3.5.1 components, but it still didn’t work until I re-installed .NET 4.5. Meanwhile, Win10 comes with .NET 4.6, so I don’t think we’ll run into any issues there.
>
>I'll review the documentation, it's been a few months since I added support for Address verification.