Err.. error? What error? You'll need to be specific.
A quick guess at your situation - you need to click "Charset" on the left side of the Resource Manager (the importing screen) before you attempt to import.
Preconditions:
(Just set the preconditions you want for that event - Page 1 is normal, you shouldn't have preconditions there, just the event the first time you see it. Add a page 2 (with a SWITCH precondition) to set what you want the event to be after the switch is set (probably blank, but not always)