1. When this red error message is displayed, I'd have loved to see a "report this bug/issue/incident" next to it. That button would have opened a dialog box for me to write in, and telling that the context would be shipped with my bug report.

To me it looked like a crash, but I do understand that programmatically it wasn't a "crash" or an unhandled exception.

2. Since this is a pre-alpha/alpha/beta version, there's nothing wrong with a green button with a picture of a bug anywhere in the interface. Just open a dialog explaining that although horrified, you'll be thrilled to learn of any bugs.

Ah yes, you made me realize we could check if the node graph isn't open and tell the user to report a bug in that situation, which must have arisen from a tool or other WYSIWYG aspect of the program causing a node graph error. But we wouldn't show it if it arose from the user just noodling around with the nodes. That's a good idea that'll be worth us implementing, thank you for the suggestion.