Problem: Activating Calendar Pro Plugin generates 500 error on all calendar functions.
I recently moved my site from one server IP to another. The site had been tested previously on this newer server with the calendar plugins working after updates and re-installation. Now once activating the PRO plugin throws 500 error on all calendar functions in the backend.
What I have done so far:
– Upgraded all the plugins
– De-activated and deleted all the plugins, manually installed them. Then activated one by one.
– Removed new plugins with copies of working versions from a week ago.
All of this creates the same issue when Calendar Pro is activated.