apt plugin fails when running on java 7

[INFO] [apt:process {execution: default}]
[INFO] Processing 130 source files
[FATAL ERROR] org.codehaus.mojo.apt.ProcessMojo#execute() caused a linkage error (java.lang.VerifyError) and may be out-of-date. Check the realms:
[FATAL ERROR] Plugin realm = app0.child-container[org.codehaus.mojo:apt-maven-plugin:1.0-alpha-4]
urls[0] = file:/home/et2448/.m2/repository/org/codehaus/mojo/apt-maven-plugin/1.0-alpha-4/apt-maven-plugin-1.0-alpha-4.jar
urls[1] = file:/home/et2448/.m2/repository/org/codehaus/plexus/plexus-utils/1.4.6/plexus-utils-1.4.6.jar
urls[2] = file:/home/et2448/.m2/repository/org/codehaus/plexus/plexus-compiler-api/1.5.2/plexus-compiler-api-1.5.2.jar
urls[3] = file:/home/et2448/.m2/repository/asm/asm/3.2/asm-3.2.jar
urls[4] = file:/home/et2448/.m2/repository/asm/asm-commons/3.2/asm-commons-3.2.jar
urls[5] = file:/home/et2448/.m2/repository/asm/asm-tree/3.2/asm-tree-3.2.jar
[FATAL ERROR] Container realm = plexus.core
urls[0] = file:/opt/maven/lib/maven-2.2.1-uber.jar
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Expecting a stackmap frame at branch target 17 in method com.sun.tools.apt.Main.<clinit>()V at offset 7
[INFO] ------------------------------------------------------------------------
[INFO] Trace
java.lang.VerifyError: Expecting a stackmap frame at branch target 17 in method com.sun.tools.apt.Main.<clinit>()V at offset 7
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:264)
        at org.codehaus.mojo.apt.AptUtils.getAptClass(AptUtils.java:216)
        at org.codehaus.mojo.apt.AptUtils.invoke(AptUtils.java:76)
        at org.codehaus.mojo.apt.AbstractAptMojo.executeApt(AbstractAptMojo.java:389)
        at org.codehaus.mojo.apt.AbstractAptMojo.executeImpl(AbstractAptMojo.java:263)
        at org.codehaus.mojo.apt.AbstractAptMojo.execute(AbstractAptMojo.java:240)
        at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
        at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
        at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:601)
        at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
        at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17 seconds
[INFO] Finished at: Wed Jul 06 02:12:56 CEST 2011
[INFO] Final Memory: 58M/212M
[INFO] ------------------------------------------------------------------------