java.io.FileNotFoundException: E:\Liferay\plugins\layouttpl\.settings\build.xml

When I do migration from liferay 6.0 to 6.1, I directly copy layout projects from svn to 6.1's plugins. Then there're more files compared to other plugins like themes. One folder is settings, the other files are .project, .classpath etc. Afterwords, I couldn't deploy project successfully. It gives me an error as followed:

BUILD FAILED
E:\Liferay\plugins\build-common-plugins.xml:50: The following error occurred whi
le executing this line:
E:\Liferay\plugins\build-common-plugins.xml:75: The following error occurred whi
le executing this line:
E:\Liferay\plugins\build-common-plugins.xml:86: The following error occurred whi
le executing this line:
E:\Liferay\plugins\build-common-plugins.xml:56: The following error occurred whi
le executing this line:
java.io.FileNotFoundException: E:\Liferay\plugins\layouttpl\.settings\build.xml
(The system cannot find the file specified)
        at java.io.FileInputStream.open(Native Method)
        at java.io.FileInputStream.<init>(FileInputStream.java:120)
        at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:
278)
        at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:
178)
        at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.jav
a:82)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:393)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:392)
        at org.apache.tools.ant.Target.performTasks(Target.java:413)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
        at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(Single
CheckExecutor.java:38)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:442)
        at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)


        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.taskdefs.MacroInstance.execute(MacroInstance.jav
a:398)
        at net.sf.antcontrib.logic.ForTask.doSequentialIteration(ForTask.java:25
9)
        at net.sf.antcontrib.logic.ForTask.doToken(ForTask.java:268)
        at net.sf.antcontrib.logic.ForTask.doTheTasks(ForTask.java:324)
        at net.sf.antcontrib.logic.ForTask.execute(ForTask.java:244)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.taskdefs.Sequential.execute(Sequential.java:68)
        at net.sf.antcontrib.logic.IfTask.execute(IfTask.java:197)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.TaskAdapter.execute(TaskAdapter.java:154)
        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:392)
        at org.apache.tools.ant.Target.performTasks(Target.java:413)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
        at org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(Single
CheckExecutor.java:38)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:442)
        at org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105)


        at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
        at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
a:106)
        at org.apache.tools.ant.Task.perform(Task.java:348)
        at org.apache.tools.ant.Target.execute(Target.java:392)
        at org.apache.tools.ant.Target.performTasks(Target.java:413)
        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
        at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExe
cutor.java:41)
        at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
        at org.apache.tools.ant.Main.runBuild(Main.java:811)
        at org.apache.tools.ant.Main.startAnt(Main.java:217)
        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

At the begining, I don't know how to solve this. Then I compare it with other plugins, and delete all files I mentioned before. Then it works.