Full calendar day Problem - can´t show day page

Please need help with Full calendar… Every time click day, no calendar is shown. Calendar disappear.

obs.: Wen i create a new APP the callendar works. But in my app it does not work even in the same size please help…

obs. I uninst. all plugins and reinst FULL CALENDAR PLUGIN but no result.
I created a backup, had deleted everything only keep the index page, but no result either.
Only works wen a create a new APP.

What can I do now??? PLEASE HELP.