I am getting an error message when trying to send sample emails. The error states that : an_error_ocured_(yes incorrect spelling)while_rendering_this_em..... (cuts off)
I'm also experiencing the same problem, can't seem to approve any emails either. I've raised this with Marketo Support and am waiting on a response.
I can Send Sample from app-sj01, could be localized to your pod(s).
Retrieving data ...