I installed the scheduler and was VERY pleased, but I tried to add a custom field and it is locked up in the customization page in Wordpress admin on the custom field tab. I am not able to access the other tabs: “Settings”, “Access Rights”, etc. Just keeps showing the progressive timer of yellow dots flashing across the middle of the screen.
The scheduler still works, on the page, but can not change any of the plugin’s settings for scheduler.
I tried uninstalling the scheduler and reinstalling without success.
Please help!! 
Hank