---
title: "Events Calendar Pro 6.2.1"
source: "https://docs.nexcess.com/software/the-events-calendar/release-notes-events-calendar-pro-events-calendar-pro-6-2-1/"
description: "Summary Maintenance Release The latest update resolves several issues including conflicts with menus and theme templates, a fatal Return value of must be of the…"
vertical: "Software"
area: "The Events Calendar"
date: "2023-09-05"
last_modified: "2026-07-06"
---

# Events Calendar Pro 6.2.1

### Summary

Maintenance Release

The latest update resolves several issues including conflicts with menus and theme templates, a fatal `Return value of must be of the type array, string returned`, corrected auto-generated Series deletion handling, a 6.0 migration error and an Event Automator integration issue.

As always, we recommend [testing updates](https://docs.nexcess.com/software/the-events-calendar/creating-and-using-a-wordpress-staging-site/) on a staging site first, but it should all be smooth sailing.

---

#### ✅ Fixed

Bugs that were squashed in this release:

- In scenarios where the `wp_posts` table was larger than the base provisional ID (1000000), during activation of ECP the provisional ID could get rolled back to a lower value, causing conflicts with legitimate post IDs and provisional IDs.
- Fixes a `Return value of TECEvents_ProCustom_TablesV1TraitsWith_Event_RecurrenceTest::add_off_pattern_flag_to_rule() must be of the type array, string returned` fatal from a return type definition. This was occurring in edge cases, where recurrence data was likely invalid to begin with.
- Do not delete edited Series following deletion of last Event in it.
- After a 6.0 migration, some recurring events with date instances that were marked as `same-time` would show wrong times in classic editor. This edge case should be resolved now. The underlying data was correct but the interface support was no longer handling `same-time` dates.
- Modify output of additional fields for Event Automator to provide consistent output and prevent infinite growth of fields in Zapier.
- Removed ‘Series’ post type from the list of available post types under “Tickets > Settings” in Event Tickets.