I have a problem about plugin update. I want to use jdchat, jdremote control web and jd trayicon. Jdownloader's start normally downloading this plugins. But the download finished and JD restart automatically. When restart the JD update install screen runing normally. Finish the update screen running a new window and it says update install failed with no reason. I don't understand. My JD version is 0.4.936 and i try reinstall JD again but nothing changed.
Please help me


JD update log :

Update JDownloader at C:\jdownloader
{WEBUPDATE_DISABLE=false, PLAF=null, SERVERLIST=[http://update3.jdownloader.org/nupd/ (-1%), http://update2.jdownloader.org/bin/ (-1%), http://update1.jdownloader.org/bin/ (-1%)]}
{}
Starting...Parameter 0 /restart
Parameter 1 /rt2
Current Date:Wed Mar 18 14:11:35 EET 2009
Backup found. date:Wed Mar 18 12:51:52 EET 2009
2009-03-18 02:11:45:Update Downloadmirrors
2009-03-18 02:11:45:Updateserver: http://update3.jdownloader.org/nupd/ (-1%)
2009-03-18 02:11:45:Updateserver: http://update2.jdownloader.org/bin/ (-1%)
2009-03-18 02:11:45:Updateserver: http://update1.jdownloader.org/bin/ (-1%)
2009-03-18 02:11:45:OS Filter: /tools/linux/unrar/unrar
2009-03-18 02:11:45:OS Filter: /tools/mac/unrar
Install: C:\jdownloader\packages\JDChat_2009-03-12_v1.jdu

at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at jd.nutils.zip.UnZip.extract(UnZip.java:78)
at jd.update.Main.installAddons(Main.java:313)
at jd.update.Main.main(Main.java:273)
Install: C:\jdownloader\packages\JDTrayLight_2009-03-12_v1.jdu

at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at jd.nutils.zip.UnZip.extract(UnZip.java:78)
at jd.update.Main.installAddons(Main.java:313)
at jd.update.Main.main(Main.java:273)
Install: C:\jdownloader\packages\JDwebinterface_2009-02-11_v4.jdu

at java.util.zip.ZipFile.open(Native Method)
at java.util.zip.ZipFile.<init>(Unknown Source)
at java.util.zip.ZipFile.<init>(Unknown Source)
at jd.nutils.zip.UnZip.extract(UnZip.java:78)
at jd.update.Main.installAddons(Main.java:313)
at jd.update.Main.main(Main.java:273)
Local: C:\jdownloaderStart java -jar -Xmx512m JDownloader.jar in C:\jdownloader