PreferencesActivity has leaked window

[cesine]

08-29 11:40:50.586: E/WindowManager(10155): android.view.WindowLeaked: Activity info.semanticsoftware.semassist.android.activity.PreferencesActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{21dd16d0 V.E..... R....... 0,0-832,460} that was originally added here
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.ViewRootImpl.<init>(ViewRootImpl.java:358)
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:248)
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
08-29 11:40:50.586: E/WindowManager(10155):     at android.app.Dialog.show(Dialog.java:286)
08-29 11:40:50.586: E/WindowManager(10155):     at android.app.AlertDialog$Builder.show(AlertDialog.java:951)
08-29 11:40:50.586: E/WindowManager(10155):     at info.semanticsoftware.semassist.android.activity.PreferencesActivity.addServer(PreferencesActivity.java:357)
08-29 11:40:50.586: E/WindowManager(10155):     at java.lang.reflect.Method.invokeNative(Native Method)
08-29 11:40:50.586: E/WindowManager(10155):     at java.lang.reflect.Method.invoke(Method.java:515)
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.View$1.onClick(View.java:3841)
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.View.performClick(View.java:4478)
08-29 11:40:50.586: E/WindowManager(10155):     at android.view.View$PerformClick.run(View.java:18698)
08-29 11:40:50.586: E/WindowManager(10155):     at android.os.Handler.handleCallback(Handler.java:733)
08-29 11:40:50.586: E/WindowManager(10155):     at android.os.Handler.dispatchMessage(Handler.java:95)
08-29 11:40:50.586: E/WindowManager(10155):     at android.os.Looper.loop(Looper.java:149)
08-29 11:40:50.586: E/WindowManager(10155):     at android.app.ActivityThread.main(ActivityThread.java:5257)
08-29 11:40:50.586: E/WindowManager(10155):     at java.lang.reflect.Method.invokeNative(Native Method)
08-29 11:40:50.586: E/WindowManager(10155):     at java.lang.reflect.Method.invoke(Method.java:515)
08-29 11:40:50.586: E/WindowManager(10155):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-29 11:40:50.586: E/WindowManager(10155):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609)
08-29 11:40:50.586: E/WindowManager(10155):     at dalvik.system.NativeStart.main(Native Method)