Flash Builder 4.7 has been pretty unstable for me.

I tried updating Java today hoping that it might help and everything went 
haywire. I can not get FB to build anything now. I think installing Java reset 
my default Java to 1.7, but I changed my symbolic link to point back to 1.6. 
Nothing seems to help and I keep getting the following error:

java.lang.ClassCastException: 
org.apache.flex.compiler.parsing.IASToken$ASTokenKind cannot be cast to 
java.lang.String
        at flex2.tools.oem.Application.processMXMLCReport(Application.java:717)
        at flex2.tools.oem.Application.compile(Application.java:632)
        at 
flex2.tools.flexbuilder.BuilderApplication.compile(BuilderApplication.java:366)
        at 
com.adobe.flexbuilder.multisdk.compiler.internal.ASApplicationBuilder$MyBuilder.mybuild(ASApplicationBuilder.java:309)
        at 
com.adobe.flexbuilder.multisdk.compiler.internal.ASApplicationBuilder.build(ASApplicationBuilder.java:128)
        at 
com.adobe.flexbuilder.multisdk.compiler.internal.ASBuilder.build(ASBuilder.java:203)
        at 
com.adobe.flexbuilder.multisdk.compiler.internal.ASItemBuilder.build(ASItemBuilder.java:93)
        at 
com.adobe.flexbuilder.project.compiler.internal.FlexProjectBuilder.buildItem(FlexProjectBuilder.java:708)
        at 
com.adobe.flexbuilder.project.compiler.internal.FlexProjectBuilder.build(FlexProjectBuilder.java:412)
        at 
com.adobe.flexbuilder.project.compiler.internal.FlexIncrementalBuilder.build(FlexIncrementalBuilder.java:171)
        at 
org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
        at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
        at 
org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
        at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
        at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
        at 
org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
        at 
org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
        at 
org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:513)
        at 
org.eclipse.core.internal.resources.Workspace.build(Workspace.java:432)
        at 
org.eclipse.ui.actions.BuildAction$1.runInWorkspace(BuildAction.java:305)
        at 
org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Here is my session data:
eclipse.buildId=M20110909-1335
java.version=1.6.0_65
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86_64, WS=cocoa, NL=en_US
Framework arguments:  -keyring /Users/harbs/.eclipse_keyring -showlocation
Command-line arguments:  -os macosx -ws cocoa -arch x86_64 -keyring 
/Users/harbs/.eclipse_keyring -consoleLog -showlocation

Any suggestion on what I can do?

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