I’m sorry for my newbie notice.
When I creating or changing recurring event with enabled collision extension, the error is appears:
Error: ReferenceError: data_copy is not defined Source File: http://site.com/dhtmlx/scheduler/ext/dhtmlxscheduler_collision.js Line: 54
In that line the “data_copy” passes as argument but this variable was never defined.
I change line 54 to:
… and seems to be everything was working.
May be it is a my stupid hack or may be there is a typo. I’m a novice.