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Old 10.09.2021, 22:10
lolo13 lolo13 is offline
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Exclamation Impossible to start Jdownloader2

Guten tag!! I have a big problem with Jdownloader2 that is impossible to start when i try to open it on windows it shows this message

java.lang.ClassNotFoundException: org.jdownloader.update.launcher.JDLauncher
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:81)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:25)

I tried to uninstall Jdownloader2 via windows but that is not possible.

I went in the jdwnloader file source and found a document that says the following:


Exception:

java.lang.RuntimeException: java.lang.NoClassDefFoundError: org/appwork/updatesys/client/ModuleProgress
at com.install4j.runtime.installer.frontend.GUIHelper.invokeOnEDT(GUIHelper.java:711)
at com.install4j.runtime.installer.config.AbstractBeanConfig.finishBatch(AbstractBeanConfig.java:51)
at com.install4j.runtime.installer.ContextImpl.registerScreens(ContextImpl.java:694)
at com.install4j.runtime.installer.controller.Controller.start(Controller.java:75)
at com.install4j.runtime.installer.Uninstaller.runInProcess(Uninstaller.java:36)
at com.install4j.runtime.installer.Uninstaller.main(Uninstaller.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:85)
at com.exe4j.runtime.WinLauncher.main(WinLauncher.java:94)
at com.install4j.runtime.launcher.WinLauncher.main(WinLauncher.java:25)
Caused by: java.lang.NoClassDefFoundError: org/appwork/updatesys/client/ModuleProgress
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.privateGetPublicMethods(Unknown Source)
at java.lang.Class.getMethods(Unknown Source)
at com.sun.beans.finder.MethodFinder$1.create(Unknown Source)
at com.sun.beans.finder.MethodFinder$1.create(Unknown Source)
at com.sun.beans.util.Cache.get(Unknown Source)
at com.sun.beans.finder.MethodFinder.findMethod(Unknown Source)
at java.beans.Statement.getMethod(Unknown Source)
at java.beans.Statement.invokeInternal(Unknown Source)
at java.beans.Statement.access$000(Unknown Source)
at java.beans.Statement$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.beans.Statement.invoke(Unknown Source)
at java.beans.Expression.getValue(Unknown Source)
at com.sun.beans.decoder.ObjectElementHandler.getValueObject(Unknown Source)
at com.sun.beans.decoder.NewElementHandler.getValueObject(Unknown Source)
at com.sun.beans.decoder.ElementHandler.getContextBean(Unknown Source)
at com.sun.beans.decoder.NewElementHandler.getContextBean(Unknown Source)
at com.sun.beans.decoder.ObjectElementHandler.getValueObject(Unknown Source)
at com.sun.beans.decoder.NewElementHandler.getValueObject(Unknown Source)
at com.sun.beans.decoder.ElementHandler.endElement(Unknown Source)
at com.sun.beans.decoder.DocumentHandler.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Un known Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
at com.sun.beans.decoder.DocumentHandler$1.run(Unknown Source)
at com.sun.beans.decoder.DocumentHandler$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at com.sun.beans.decoder.DocumentHandler.parse(Unknown Source)
at java.beans.XMLDecoder$1.run(Unknown Source)
at java.beans.XMLDecoder$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.beans.XMLDecoder.parsingComplete(Unknown Source)
at java.beans.XMLDecoder.readObject(Unknown Source)
at com.install4j.runtime.installer.config.AbstractBeanConfig$2.call(AbstractBeanConfig.java:54)
at com.install4j.runtime.installer.config.AbstractBeanConfig$2.call(AbstractBeanConfig.java:51)
at com.install4j.runtime.installer.frontend.GUIHelper$4.run(GUIHelper.java:701)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.appwork.updatesys.client.ModuleProgress
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at com.install4j.runtime.installer.helper.Install4jClassLoader.loadClass(Install4jClassLoader.java:78)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 61 more

System properties:

java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=C:\Users\Lolo\AppData\Local\JDownloader 2.0\Uninstall JDownloader.exe
exe4j.semaphoreName=Local\c:_users_lolo_appdata_local_jdownloader_2.0_uninstall_jdownloader.exe
sun.boot.library.path=c:\users\lolo\appdata\local\jdownloader 2.0\jre\bin
java.vm.version=25.162-b12
java.vm.vendor=Oracle Corporation
java.vendor.url=http://java.oracle.com/
exe4j.consoleCodepage=cp0
path.separator=;
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.country=FR
user.script=
sun.os.patch.level=
install4j.exeDir=C:\Users\Lolo\AppData\Local\JDownloader 2.0\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\Users\Lolo\AppData\Local
java.runtime.version=1.8.0_162-b12
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment
java.endorsed.dirs=c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\endorsed
os.arch=x86
java.io.tmpdir=C:\Users\Lolo\AppData\Local\Temp\
line.separator=

java.vm.specification.vendor=Oracle Corporation
user.variant=
exe4j.tempDir=
os.name=Windows 10
sun.jnu.encoding=Cp1252
javax.xml.parsers.SAXParserFactory=com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
java.library.path=C:\Users\Lolo\AppData\Local\JDownloader 2.0\.\.install4j;C:\Users\Lolo\AppData\Local\JDownloader 2.0\.\.install4j\user;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\Wi ndowsPowerShell\v1.0\;C:\WINDOWS\System32\OpenSSH\;C:\Users\Lolo\AppData\Local\Microsoft\WindowsApps ;c:\users\lolo\appdata\local\jdownloader 2.0\jre\bin
sun.awt.enableExtraMouseButtons=true
java.specification.name=Java Platform API Specification
java.class.version=52.0
sun.management.compiler=HotSpot Client Compiler
exe4j.isInstall4j=true
os.version=10.0
user.home=C:\Users\Lolo
user.timezone=Europe/Paris
java.awt.printerjob=sun.awt.windows.WPrinterJob
file.encoding=Cp1252
java.specification.version=1.8
java.class.path=C:\Users\Lolo\AppData\Local\JDownloader 2.0\.install4j\i4jruntime.jar
user.name=Lolo
java.vm.specification.version=1.8
sun.java.command=C:\Users\Lolo\AppData\Local\JDownloader 2.0\Uninstall JDownloader.exe
java.home=c:\users\lolo\appdata\local\jdownloader 2.0\jre
sun.arch.data.model=32
exe4j.launchName=C:\Users\Lolo\AppData\Local\JDownloader 2.0\Uninstall JDownloader.exe
user.language=fr
java.specification.vendor=Oracle Corporation
awt.toolkit=sun.awt.windows.WToolkit
java.vm.info=mixed mode
exe4j.unextractedPosition=0
java.version=1.8.0_162
java.ext.dirs=c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\ext;C:\WINDOWS\Sun\Java\lib\ext
sun.boot.class.path=c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\resources.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\rt.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\sunrsasign.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\jsse.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\jce.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\charsets.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\lib\jfr.jar;c:\users\lolo\appdata\local\jdownloader 2.0\jre\classes
install4j.appDir=C:\Users\Lolo\AppData\Local\JDownloader 2.0\
java.vendor=Oracle Corporation
file.separator=\
java.vendor.url.bug=**External links are only visible to Support Staff** sun.io.unicode.encoding=UnicodeLittle
sun.cpu.endian=little
install4j.systemLanguage=fr
sun.desktop=windows
sun.cpu.isalist=

I hope someone can help me because there is nothing more I can do really this goes way beyond my knowledge. greetings from France
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  #2  
Old 13.09.2021, 17:57
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Jiaz Jiaz is offline
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Join Date: Mar 2009
Location: Germany
Posts: 72,195
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Please see
https://support.jdownloader.org/Know...r-installation
You can find your JDownloader in
C:\Users\USERNAME\AppData\Local\JDownloader 2.0
In Kurz: die JDownloader.jar herunterladen und in den Ordner legen und dann die Datei Core.jar löschen, sowie die
Ordner tmp und update
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  #3  
Old 14.09.2021, 17:08
lolo13 lolo13 is offline
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This worked thant you so much JIAZ danke schön!!!!
Keep up the good work!
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  #4  
Old 14.09.2021, 17:10
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Jiaz Jiaz is offline
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You're welcome
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  #5  
Old 21.09.2021, 01:55
metal08 metal08 is offline
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Join Date: Jun 2009
Posts: 22
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thanks

This works for me too, as I was (suddenly) unable to start JDownloaded with the same list of startup errors as lolo13

Last edited by metal08; 21.09.2021 at 01:58.
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  #6  
Old 21.09.2021, 11:47
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Jiaz Jiaz is offline
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Location: Germany
Posts: 72,195
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@metal08: Thanks for the feedback! Glad you could easily fix your installation on your own!
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