Hi. Sorry you experienced this.
Of course, I can’t know your setups exactly (so “not it” if something bad happens 😉 but you should be able to:
- delete the plugins to get rid of both 4.0.7 and 4.1
- re-install version 4.1 to make sure you are only using the latest version (it was probably caused by the same issue as your live site — weird plugin folder name created and old folder not getting deleted)
- yes, you can rename the folders (or just delete them and re-install afresh)
You can download the latest versions at https://theeventscalendar.com/my-account/downloads/
I hope this helps. Sorry for the inconvenience. In case you’re wondering, the issue is resolved for future automatic updates.