Image upload error when using resizer

[simon]

@AstonJ

Edit: I’ve also just noticed this under the max image size kb option:

The maximum image upload size in kB. This must be configured in nginx (client_max_body_size) / apache or proxy as well.

I don’t think I’ve done that - could it be causing it? (any examples on where to edit this?)

It should be possible to increase that value by adding an upload_size parameter to your site’s app.yml file. See Change the maximum attachment/upload size for details.