Attachments are not allowed in the forums due to security reasons. Still, if you need to send us a file you can open a support ticket and attach the file(s) to it.
Concerning your second question:
I am pasting a quote from the reply in the support ticket you received from us -
The behavior you are experiencing is due to the fact that the RadCalendars' popups are with a smaller z-index than the RadComboBox's popup. Therefore, in order to work-around this behavior, I suggest you decrease the RadComboBox's zIndex by setting its zIndex property. More information can be found here.
the Telerik team
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