File picker failure creating file and attachment

We’re trying to create a fairly simple control to create a new object, with a file picker for file upload, following this article:

When I select files to use their, it looks like it’s working but then displays “Failure creating file and attachment” - the files are approx 175KB. Interestingly, the three apex api calls that are made from skuid to SF show no errors.

Hi Craig,

Out of curiosity can you edit/add another attached file from the SF detail  page without issue?