Some users a running into difficulties related to having old and incompatible versions of a java xml parsing file --such as xerces.jar -- on their computers. If you see an installation error that looks something like the one below, then we have a fix for you.


To verify that this is the case, open up a Terminal window and type:
ls /Library/Java/Extensions

If there is something like xerces.jar listed there, it will need to be move someplace else. For now, the desktop is a good place. Move it by entering the command:
mv /Library/Java/Extensions/xerces.jar ~/Desktop/

If the file is not present at the location mentioned above, try the same steps as above, but using the path ~/Library/Java/Extensions instead.

Once this has been done, retry the installer.



INSTALLATION ERROR NOTE
Exception:

java.lang.AbstractMethodError: org.apache.xerces.dom.DocumentImpl.getXmlStandalone()Z
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo(DOM2TO.java:373)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:127)
    at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:94)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:661)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:707)
    at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:313)
    at com.install4j.runtime.installer.helper.XmlHelper.writeFile(Unknown Source)
    at com.install4j.runtime.installer.helper.XmlHelper.writeFile(Unknown Source)
    at com.install4j.runtime.beans.AutoUninstallHandler.saveProperties(Unknown Source)
    at com.install4j.runtime.installer.InstallerContextImpl.finish(Unknown Source)
    at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
    at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
    at com.install4j.runtime.installer.Installer.main(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
    at com.install4j.runtime.launcher.MacLauncher.main(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at apple.launcher.LaunchRunner.run(LaunchRunner.java:116)
    at apple.launcher.LaunchRunner.callMain(LaunchRunner.java:51)
    at apple.launcher.JavaApplicationLauncher.launch(JavaApplicationLauncher.java:52)

System properties:

java.runtime.name=Java(TM) SE Runtime Environment
exe4j.moduleName=/Volumes/Juxta/Juxta Installer.app
sun.boot.library.path=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Libraries
java.vm.version=19.1-b02-334
awt.nativeDoubleBuffering=true
gopherProxySet=false
mrj.build=10M3326
java.vm.vendor=Apple Inc.
java.vendor.url=http://www.apple.com/
path.separator=:
java.vm.name=Java HotSpot(TM) 64-Bit Server VM
file.encoding.pkg=sun.io
user.country=US
sun.os.patch.level=unknown
install4j.exeDir=/Volumes/Juxta/
java.vm.specification.name=Java Virtual Machine Specification
user.dir=/Volumes/Juxta/Juxta Installer.app/Contents/Resources/app
java.runtime.version=1.6.0_24-b07-334-10M3326
java.awt.graphicsenv=apple.awt.CGraphicsEnvironment
java.endorsed.dirs=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib/endorsed
os.arch=x86_64
apple.awt.graphics.UseOpenGL=false
java.io.tmpdir=/var/folders/pL/pLB4euiZGLe0O5q4-kbSi++++TQ/-Tmp-/
line.separator=

java.vm.specification.vendor=Sun Microsystems Inc.
os.name=Mac OS X
proxySet=false
sun.java2d.noddraw=true
sun.jnu.encoding=MacRoman
java.library.path=/Volumes/Juxta/Juxta Installer.app/Contents/Resources/Java:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources:.:/Users/robertlouisabrahamson/Library/Java/Extensions:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java
java.specification.name=Java Platform API Specification
java.class.version=50.0
sun.management.compiler=HotSpot 64-Bit Server Compiler
os.version=10.6.8
http.nonProxyHosts=local|*.local|169.254/16|*.169.254/16
user.home=/Users/robertlouisabrahamson
user.timezone=Europe/London
java.awt.printerjob=apple.awt.CPrinterJob
file.encoding=MacRoman
java.specification.version=1.6
java.class.path=/Volumes/Juxta/Juxta Installer.app/Contents/Resources/app/.install4j/i4jruntime.jar:/Volumes/Juxta/Juxta Installer.app/Contents/Resources/app/user.jar
user.name=robertlouisabrahamson
apple.awt.graphics.UseQuartz=false
java.vm.specification.version=1.0
java.home=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
sun.arch.data.model=64
user.language=en
java.specification.vendor=Sun Microsystems Inc.
awt.toolkit=apple.awt.CToolkit
java.vm.info=mixed mode
java.version=1.6.0_24
java.ext.dirs=/Users/robertlouisabrahamson/Library/Java/Extensions:/Library/Java/Extensions:/System/Library/Java/Extensions:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home/lib/ext
sun.boot.class.path=/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jsfd.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/classes.jar:/System/Library/Frameworks/JavaVM.framework/Frameworks/JavaRuntimeSupport.framework/Resources/Java/JavaRuntimeSupport.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/ui.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/laf.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/sunrsasign.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jsse.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/jce.jar:/System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Classes/charsets.jar:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar
install4j.appDir=/Volumes/Juxta/Juxta Installer.app/Contents/Resources/app/
java.vendor=Apple Inc.
file.separator=/
java.vendor.url.bug=http://bugreport.apple.com/
sun.io.unicode.encoding=UnicodeLittle
sun.cpu.endian=little
mrj.version=1060.1.6.0_24-334
socksNonProxyHosts=local|*.local|169.254/16|*.169.254/16
ftp.nonProxyHosts=local|*.local|169.254/16|*.169.254/16
sun.awt.exception.handler=apple.awt.CToolkit$EventQueueExceptionHandler
sun.cpu.isalist=