Problems with exporting

I am trying to export a bibliography to RTF, but when I do so, I get the message “EndNote Error,” and a blank file is created. When I go back to the bibliography, the previews of entries do not display; in place of the previews, I get the message “No bibliographic style is initialized.” I have tried changing the output style, recovering the library, etc., and I still cannot export my bibliography. I would be grateful for any ideas on what to do. Yours, Jonathan

Where are you changing the style?  In the program itself (which doesn’t help)  or in the export dialog (where it needs to be)? 

Your comment actually gave me the key to solving my problem. When I explicitly set the style in the Export dialog, everything worked. Thank you so much!