Am using //v.1.1 build 81107.
Am using a grid with one of my column types as dhxCalendar.
When i click on the calendar am getting some iframe with page not found kind of error.
I will attach the screen shot.
Please, check the sample dhtmlxGrid/samples/cell_types/calendar_grid.html. Possibly it will help to resolve the issue
If problem persists, please provide the sample to recreate the issue