8.1.4 doesn't start on Mac OS 10.6.2

Ok, I found idea.log in ~/Library/Caches/IntelliJIDEA8x/log it has this error, maybe a problem with one of my plugins?

2009-11-16 09:45:19,170 [      0]   INFO -        #com.intellij.idea.Main - ------------------------------------------------------ IDEA STARTED ------------------------------------------------------
2009-11-16 09:45:33,963 [  14793]  ERROR - com.intellij.ide.IdeEventQueue - Error during dispatching of java.awt.event.InvocationEvent[INVOCATION_DEFAULT,runnable=com.intellij.idea.MainImpl$3@9c7bfc,notifier=null,catchExceptions=false,when=1258386328716] on apple.awt.CToolkit@8fe358
java.lang.UnsupportedClassVersionError: Bad version number in .class file
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:675)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:520)
    at com.intellij.util.lang.UrlClassLoader._defineClass(UrlClassLoader.java:119)
    at com.intellij.util.lang.UrlClassLoader.defineClass(UrlClassLoader.java:115)
    at com.intellij.util.lang.UrlClassLoader._findClass(UrlClassLoader.java:91)
    at com.intellij.ide.plugins.cl.PluginClassLoader.loadClassInsideSelf(PluginClassLoader.java:78)
    at com.intellij.ide.plugins.cl.PluginClassLoader.loadClass(PluginClassLoader.java:41)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:242)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.loadClass(ExtensionComponentAdapter.java:140)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.getComponentImplementation(ExtensionComponentAdapter.java:61)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.getComponentInstance(ExtensionComponentAdapter.java:67)
    at com.intellij.openapi.extensions.impl.ExtensionComponentAdapter.getExtension(ExtensionComponentAdapter.java:106)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.processAdapters(ExtensionPointImpl.java:201)
    at com.intellij.openapi.extensions.impl.ExtensionPointImpl.getExtensions(ExtensionPointImpl.java:150)
    at com.intellij.openapi.extensions.Extensions.getExtensions(Extensions.java:99)
    at com.intellij.openapi.extensions.Extensions.getExtensions(Extensions.java:87)
    at com.intellij.openapi.fileTypes.impl.FileTypeManagerImpl.<clinit>(FileTypeManagerImpl.java:163)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:242)
    at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.a(ComponentManagerImpl.java:32)
    at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.a(ComponentManagerImpl.java:45)
    at com.intellij.openapi.components.impl.ComponentManagerImpl$ComponentsRegistry.access$100(ComponentManagerImpl.java:54)
    at com.intellij.openapi.components.impl.ComponentManagerImpl.a(ComponentManagerImpl.java:70)
    at com.intellij.openapi.components.impl.ComponentManagerImpl.initComponents(ComponentManagerImpl.java:128)
    at com.intellij.openapi.components.impl.stores.ApplicationStoreImpl.load(ApplicationStoreImpl.java:7)
    at com.intellij.openapi.application.impl.ApplicationImpl.load(ApplicationImpl.java:135)
    at com.intellij.idea.IdeaApplication.run(IdeaApplication.java:41)
    at com.intellij.idea.MainImpl$3.run(MainImpl.java:1)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
    at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:57)
    at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:99)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:189)
    at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

It looks like one or more of your plugins were compiled using jdk 1.6 and you are running IntelliJ IDEA on jdk 1.5. Which is strange because you are on Snow Leopard and are not supposed to have jdk 1.5... Perhaps the plugin was compiled with jdk 1.7 or was corrupted somehow.

Bas

I'm also seeing this on 10.5 [waiting for a new hard disk to upgrade to 10.6]

In a terminal window, java version reports as 1.5.0_20 no matter what is specified in the java preferences [currently set to 1.6 before any older versions [1.5 64 bit, 1.5 32 bit & 1.4.1]]

Perhaps the OS needs a restart to have the change take effect.

On the other hand, installing the 8.1.4 image broke the 8.1.3 install - at a guess something in the Idea cache / settings area was changed and is no longer compatible.

I changed my Info.plist to run IntelliJ 8.1.4 with 1.6 and all is well.

I have 1.5 on Snow Leopard because I pulled it over from a machine with Leopard.

Well, at least on 10.5 that does not help

[log]

2009-11-19 09:51:12,582 [      0]   INFO -        #com.intellij.idea.Main - ------------------------------------------------------ IDEA STARTED ------------------------------------------------------
2009-11-19 09:51:15,535 [   2953]  ERROR - llij.ide.plugins.PluginManager - Expected implementation for extension declaration (ep = com.intellij.completion.contributor)
java.lang.RuntimeException: Expected implementation for extension declaration (ep = com.intellij.completion.contributor)
 at com.intellij.openapi.extensions.impl.ExtensionsAreaImpl.registerExtension(ExtensionsAreaImpl.java:134)
 at com.intellij.openapi.extensions.impl.ExtensionsAreaImpl.registerAreaExtensionsAndPoints(ExtensionsAreaImpl.java:313)
 at com.intellij.ide.plugins.IdeaPluginDescriptorImpl.setLoader(IdeaPluginDescriptorImpl.java:365)
 at com.intellij.ide.plugins.PluginManager.initializePlugins(PluginManager.java:202)
 at com.intellij.ide.plugins.PluginManager.getPlugins(PluginManager.java:87)
 at com.intellij.openapi.application.impl.ApplicationImpl.e(ApplicationImpl.java:327)
 at com.intellij.openapi.application.impl.ApplicationImpl.<init>(ApplicationImpl.java:221)
 at com.intellij.openapi.application.ex.ApplicationManagerEx.createApplication(ApplicationManagerEx.java:7)
 at com.intellij.idea.IdeaApplication.<init>(IdeaApplication.java:26)
 at com.intellij.idea.MainImpl.a(MainImpl.java:1)
 at com.intellij.idea.MainImpl.access$000(MainImpl.java:33)
 at com.intellij.idea.MainImpl$2.proceed(MainImpl.java)
 at com.intellij.ide.a.c.j$10.run(j$10.java:2)
 at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
 at java.awt.EventQueue.dispatchEvent(EventQueue.java:633)
 at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
 at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
 at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
 at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
 at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
2009-11-19 09:51:15,538 [   2956]  ERROR - llij.ide.plugins.PluginManager - JDK: 1.6.0_15
2009-11-19 09:51:15,538 [   2956]  ERROR - llij.ide.plugins.PluginManager - VM: Java HotSpot(TM) 64-Bit Server VM
2009-11-19 09:51:15,538 [   2956]  ERROR - llij.ide.plugins.PluginManager - Vendor: Apple Inc.
2009-11-19 09:51:15,538 [   2956]  ERROR - llij.ide.plugins.PluginManager - OS: Mac OS X

An 'maia' build 10781 has no trouble launching and running with the default .app bundle [different cache directory?]

If you are trying to run Maia and 8.1.x you may be being affected by this:

http://www.jetbrains.net/devnet/thread/284071?tstart=0