Как заставить Clean and Build в netbeans работать снова?

Я не знаю, является ли это проблемой NetBeans, Ubuntu или Java. Но я использую Ubuntu 13.10 64bit и пытаюсь создать jar-файл из моего java-приложения, созданного с помощью Netbeans IDE 7.0.1.

Это то, что происходит при нажатии кнопки «Очистить и построить»

init:
deps-clean:
Updating property file: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/built-clean.properties
Deleting directory /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build
clean:
init:
deps-jar:
Created dir: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build
Updating property file: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/built-jar.properties
Created dir: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/classes
Created dir: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/empty
Created dir: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/generated-sources/ap-source-output
Compiling 11 source files to /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/classes
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/src/Connect.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Copying 17 files to /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build/classes
compile:
Created dir: /home/jeggy/Skjøl/NetBeansProjects/KTEditor/dist
Copying 1 file to /home/jeggy/Skjøl/NetBeansProjects/KTEditor/build
/home/jeggy/Skjøl/NetBeansProjects/KTEditor/nbproject/build-impl.xml:990: The following error occurred while executing this line:
/home/jeggy/Skjøl/NetBeansProjects/KTEditor/nbproject/build-impl.xml:834: copylibs doesn't support the "excludeFromCopy" attribute
BUILD FAILED (total time: 0 seconds)

Может кто-нибудь объяснить или помочь мне исправить это?