Multiple Issues Creating an Event

When I publish an event from the front end, it immediately redirects to the following error:

Array ( [errors] => Array ( [import_file_error] => Array ( [0] => Remote file is incorrect size ) ) [error_data] => Array ( ) )

It created the listing in the back end, but the recurring schedule was not saved and neither were the images. But everything else about the listing is correct. When I try to edit the listing from the WP Admin, even without adding images but just to change the recurring to be “yes” it takes me to the same error, and instead of updating the listing it creates an entirely new one in pending status. Neither the original listing nor the duplicate one have the recurring schedule I had just set.

I searched and found a thread suggesting to install the “Disable Real MIME Check” plugin to get around this, but that didn’t solve anything. I still get the same error whenever trying to create or update an event.

When I go to the main page for Events, the event I created which is in published status does not show on the list of All Events, it just says no results. But when I visit the event’s detail page by clicking View in the WP Admin the event page shows fine. The event also doesn’t show up when I search for it specifically by name on the front end.

I’m using the Free Event CPT with only a few minor changes to the form like removing the lat/long, Business Time, etc. I set up event categories. Otherwise it is like it was out of the box. WP 4.8.3 and that latest version of all GD plugins/extensions.

So again to recap:

1. Every time I add or update an event listing it gives me an error.
2. Every time I update, it gives an error and creates a duplicate event.
3. Images won’t save and neither will the recurring event schedule.
4. The event doesn’t show up when viewing All Events or when searching.

That’s a lot of problems for just trying to do the most basic thing… please advise.