Creating a new file in another folder then the one, last used doesn't work; screen disappears; also save as, to another folder doesnt work as well. Last: export to another folder then the one used perviously doesnt work as well.
Go to http://forums.adobe.com/community/premiere and, in the area just under Ask a Question, type in
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I am Windows so did not bookmark the messages, but I have seen SOME message threads with SOME solutions for SOME mavericks problems