Error while Exporting to the War File Sets in Project Properties

Can Anyone Help me Out Please.I am getting Error While Exporting to the WAR file Sets in Project Properties.

Error:Operation Failed.
ZIP file Must have atleastone EntrySee/.metadata/.logfile

Could you tell a few more details.

Just guessing, but are you running Sysdeo Tomcat-plugin Eclipse? If so, recheck the tomcat properties in project specific settings.