The selected file /tmp/filetAxayC could not be uploaded, because the destination sites/default/files/css/css_a91cd284035e73ba34d112bfed2f5a16.css is not properly configured.
  The selected file /tmp/filex7Mteb could not be uploaded, because the destination sites/default/files/css/css_de1aa27776f1462d2b0d83a80ce4b92d.css is not properly configured.

Specify the view in which you wish this calendar to start. The choices are Day, Week and Month.

Specify the views between which the user is allowed to switch.

This setting defines which day of the week (Monday, Tuesday, etc.) will be leftmost when the calendar is in week and month views.

Click the “Add Calendar Item” button to pop up a page which allows you to define what Items will be displayed on this calendar. In the popup, there are four options:

• Description - Type a description (for your reference only) for this group of Items.
• Items - Use the Query Builder to find the Item(s) you wish to be displayed in this group.
• Starting Date & Time Field - In conjunction with the Ending Date & Time Field, the Field picked by this setting determines on what day(s) and time(s) to display Items in this group.
• Ending Date & Time Field - In conjunction with the Starting Date & Time Field, the Field picked by this setting determines on what day(s) and time(s) to display Items in this group.

After adding a calendar item, you may customize how to display items in that group by using the “Items View on the Calendar” Expression builder.