The external program'dvips', which was used to export the file, reported an error. You might wish to look at the document info dialog which you will find in the File-Menu for a precise error report.
La ekstera programo 'dvips' uzata por eksporti la dosieron raportis eraron. Vi povus rigardi la dokumentinforman fenestron en la Dosiero menuo por ricevi detalan eraroprotokolon.