Problem in DIS?
DIS is a complex program that can do a lot of things. It can happens that something breaks or was not taken in account.
Preliminary checks
Before you report the issue or spend time trying to debug, please check the following items:
Are you using the latest version of Visual Studio?
Are you using the latest version of DIS?
Are all prerequisites met?
When you have checked all this, and the issue persists, your next step is to gather and check the necessary information.
Feeling adventurous?
A big portion of our code has been extracted and put into NuGet packages. Based on the stacktrace of the exception or the topic, you could have a look at the NuGet libraries to see if you can spot the problem. You can then create an issue or pull request on GitHub to help out with the code.