I am trying to install Zimbra Desktop 0.92 on Windows XP. I keep getting the following error:
Installation error: The previous version is newer than the new version. Due to potential risk of corrupting user data and program data, we do not support installing an older version. Previous Version/Build: dev/0 New version/Build: 0.92/1433
When I go to add/remove programs, it says that there is Zimbra Desktop 0.53. When I try to uninstall it, I get this message:
install4j An error occured. java.lang.runtimeException: The language "en-US" is not available. Error log: c:\docments and settings\mark\local settings\temp\install4jerror3802.log.
I click OK and nothing happens.


Here is the logfile:
Exception:
java.lang.RuntimeException: The language "en_US" is not available.
at com.install4j.runtime.installer.ContextImpl.setLan guageId(Unknown Source)
at com.install4j.runtime.installer.UninstallerContext Impl.getLanguageId(Unknown Source)
at com.install4j.runtime.installer.controller.Languag eSelector.initLanguage(Unknown Source)
at com.install4j.runtime.installer.controller.Control ler.start(Unknown Source)
at com.install4j.runtime.installer.Uninstaller.main(U nknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
System properties:
java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition
exe4j.moduleName=C:\zimbra\zdesktop\uninstall.exe
exe4j.processCommFile=C:\DOCUME~1\mark\LOCALS~1\Te mp\e4j_p1076.tmp
exe4j.semaphoreName=c:_zimbra_zdesktop_uninstall.e xe
sun.boot.library.path=c:\zimbra\zdesktop\jre\bin
java.vm.version=1.5.0_10-b03
java.vm.vendor=Sun Microsystems Inc.
java.vendor.url=http://java.sun.com/
exe4j.consoleCodepage=cp0
path.separator=;
java.vm.name=Java HotSpot(TM) Client VM
file.encoding.pkg=sun.io
user.country=US
sun.os.patch.level=Service Pack 2
install4j.exeDir=C:\zimbra\zdesktop\
java.vm.specification.name=Java Virtual Machine Specification
user.dir=C:\zimbra
java.runtime.version=1.5.0_10-b03
java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironm ent
java.endorsed.dirs=c:\zimbra\zdesktop\jre\lib\endo rsed
os.arch=x86
java.io.tmpdir=C:\DOCUME~1\mark\LOCALS~1\Temp\
line.separator=
java.vm.specification.vendor=Sun Microsystems Inc.
user.variant=
exe4j.tempDir=
os.name=Windows XP
sun.java2d.noddraw=true
sun.jnu.encoding=Cp1252
java.library.path=C:\zimbra\zdesktop;.;C:\WINDOWS\ system32;C:\WINDOWS;C:\zimbra\zdesktop\.\.install4 j;C:\Program Files\ThinkPad\Utilities;C:\WINDOWS\system32;C:\WI NDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Intel\Wireless\Bin\;C:\Program Files\ATI Technologies\ATI.ACE\;C:\Program Files\Diskeeper Corporation\Diskeeper\;C:\Program Files\ThinkPad\ConnectUtilities;C:\Program Files\Common Files\Lenovo;C:\Program Files\Lenovo\Client Security Solution;C:\econfig\cfgViews;C:\econfig\Lib;C:\Pro gram Files\Common Files\SYSTEM\MSMAPI\1033;C:\Program Files\QuickTime\QTSystem\;c:\zimbra\zdesktop\jre\b in
java.specification.name=Java Platform API Specification
java.class.version=49.0
sun.management.compiler=HotSpot Client Compiler
exe4j.isInstall4j=true
os.version=5.1
user.home=C:\Documents and Settings\mark
user.timezone=America/New_York
java.awt.printerjob=sun.awt.windows.WPrinterJob
file.encoding=Cp1252
java.specification.version=1.5
java.class.path=C:\zimbra\zdesktop\.install4j\i4jr untime.jar;C:\zimbra\zdesktop\.\.install4j\user.ja r;
user.name=mark
java.vm.specification.version=1.0