问题
When trying to run Appcelerator Studio getting this error
Ive tried to reinstall Studio with all libraries and caches, nothing works.
OSX 10.10.4 (14E46) Java 8 Update 60
An error has occurred. See the log file ~/Appcelerator_Studio_Workspace/.metadata/.log.
!SESSION 2015-08-20 19:53:03.688 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.9.0-ea
java.vendor=Oracle Corporation
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=ru_RU
Framework arguments: -keyring /Users/user/.eclipse_keyring -showlocation
Command-line arguments: -os macosx -ws cocoa -arch x86_64 -keyring /Users/user/.eclipse_keyring -consoleLog -showlocation
!ENTRY org.eclipse.core.resources 2 10035 2015-08-20 19:53:05.671
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.
!ENTRY org.eclipse.core.net 1 0 2015-08-20 19:53:06.419
!MESSAGE System property http.nonProxyHosts has been set to local|*.local|169.254/16|*.169.254/16 by an external source. This value will be overwritten using the values from the preferences
!ENTRY org.eclipse.osgi 4 0 2015-08-20 19:53:17.256
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/w3c/dom/stylesheets/StyleSheetList
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:759)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.defineClass(ModuleClassLoader.java:272)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.defineClass(ClasspathManager.java:632)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findClassImpl(ClasspathManager.java:588)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClassImpl(ClasspathManager.java:540)
at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:527)
at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:160)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 44 more
!ENTRY org.eclipse.core.jobs 2 2 2015-08-20 19:53:17.680
!MESSAGE Job found still running after platform shutdown. Jobs should be canceled by the plugin that scheduled them during shutdown: com.aptana.usage.internal.DefaultAnalyticsEventHandler$1回答1:
To fix this issue you need to switch JavaVirtualMachines from jdk1.9.0.jdk to jdk1.7.0_80.jdk or 1.6.0.jdk
/Library/Java/JavaVirtualMachines/jdk1.9.0.jdk/
来源：https://stackoverflow.com/questions/32124180/mac-appcelerator-studio-an-error-has-occurred