How can I access the specific errors that AS is throwing when building a script? The docs mention something about SetCommonMessageStream(), but I cannot find any other mention of it / don't know how to use it. Thanks.

I haven't had any problems just using the MessageCallback() function in the tutorial example.

Good thing you asked about this. I saw now that the documentation for the Build method is out of date (I'll have to fix this for the next release).

The method is no longer called SetCommonMessageStream, it's now SetMessageCallback. You can see how to use this on the 'Good Practices' page in the documentation.

Regards,
Andreas