davidtstout Not recently active ProfileForums Topics StartedReplies CreatedEngagementsFavorites Search replies: Forum Replies Created Viewing 1 post (of 1 total) Author Posts October 28, 2014 at 6:45 pm in reply to: Validation Error #155 davidtstoutParticipant Hi, I’ve got the same issue. I’m putting this – https://script.google.com/macros/ – as the callback but it’s coming up with – Validation failed: Not a valid URL format – any ideas? Thanks, Author Posts Viewing 1 post (of 1 total)