Hello. That give a crash, only when connect with “On success”. Perhaps its a bug or i trying doing something “illegal” and you forget “disable that”
I tried getting a test case to crash using the Download Image node connected to the Draw Texture node, but was unsuccessful. If you are able to reproduce the crash consistently, then we ask that you take at our How to Report a Bug sticky on the forums and provide us with all the information that is requested there, in your response.
Let me know if you have further questions.