I posted this previously as a reply to a related old thread. No response, so here it is again.
My mesh first failed due to running out of memory, then on the next attempt, I got the mysterious “An Error Occurred” message. I don’t know what to change to make it succeed. How do I move forward?
Paul
Hi Paul,
Thanks for reaching out to us! I will have a look and get back to you shortly. 
Hi there,
We really appreciate you bringing this issue to our attention and we have already reported the error message ‘An error occurred’ as a bug on our platform.
In the meantime, as a workaround, you can:
increase the mesh size
increase the small feature suppression or
try using a different machine with a higher memory which might help to resolve this issue.
If you need further help with this, please don’t hesitate to get in touch. We hope you are able to successfully overcome this issue soon!