Hi,
Sorry for the issues you are having. I agree this is frustrating. I can help troubleshoot it with you.
I took a look at your sites and it is strange all the Past Events work correctly it is only the future events having an issue.
I did not get a 500 error though, just a 404 error.
They all keep getting redirected to http://destinyrocklin.tv/all/.
For a first step to narrow this down can you follow this guide:
https://theeventscalendar.com/support/documentation/troubleshooting-404-errors/
It may not help, but it is good to rule this out.
Testing For Conflicts
If that does not work can you please then follow our Testing for Conflict Guide:
https://theeventscalendar.com/support/documentation/testing-for-conflicts/
That will help narrow down the conflict causing the issue.
Custom Coding
Do you have any custom coding for the Events Calendar or any coding that changes permalinks or flushes them?
Let me know what you find out and we can go from there.
Thanks