私はここで新しいです。私はすでに自分の問題の解決策を探していますが、見つけることができません。したがって、問題は、新しいWebアプリケーションを作成しているときに、すでにGoogleAppEngineを選択していることです。[次へ]をクリックしても何も起こりません。ただし、IDEの右下部分にエラーサインが表示されます。
これはmessages.txt（ログ）の内容です
>Log Session: Saturday, November 17, 2012 3:53:54 PM CST
>System Info:
Product Version = NetBeans IDE 7.2.1 (Build 201210100934) (#a183c5e41a19)
Operating System = Windows 7 version 6.1 running on x86
Java; VM; Vendor = 1.7.0_05; Java HotSpot(TM) Client VM 23.1-b03; Oracle Corporation
Runtime = Java(TM) SE Runtime Environment 1.7.0_05-b05
Java Home = C:\Program Files\Java\jdk1.7.0_05\jre
System Locale; Encoding = en_US (nb); Cp1252
Home Directory = C:\Users\MATT
Current Directory = C:\Program Files (x86)\NetBeans 7.2.1
User Directory = C:\Users\MATT\AppData\Roaming\NetBeans\7.2.1
Cache Directory = C:\Users\MATT\AppData\Local\NetBeans\Cache\7.2.1
Installation = C:\Program Files (x86)\NetBeans 7.2.1\nb
C:\Program Files (x86)\NetBeans 7.2.1\ide
C:\Program Files (x86)\NetBeans 7.2.1\java
C:\Program Files (x86)\NetBeans 7.2.1\apisupport
C:\Program Files (x86)\NetBeans 7.2.1\webcommon
C:\Program Files (x86)\NetBeans 7.2.1\websvccommon
C:\Program Files (x86)\NetBeans 7.2.1\enterprise
C:\Program Files (x86)\NetBeans 7.2.1\profiler
C:\Program Files (x86)\NetBeans 7.2.1\harness
C:\Program Files (x86)\NetBeans 7.2.1\javafx
C:\Program Files (x86)\NetBeans 7.2.1\platform
Boot & Ext. Classpath = C:\Program Files\Java\jdk1.7.0_05\jre\lib\resources.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\rt.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\jce.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.7.0_05\jre\classes;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\comm.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\jmf.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\sound.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.7.0_05\jre\lib\ext\zipfs.jar
Application Classpath = C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\boot.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\org-openide-modules.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\org-openide-util-lookup.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\org-openide-util.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\boot_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\boot_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\boot_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\boot_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-modules_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-modules_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-modules_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-modules_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util-lookup_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util-lookup_pt_BR.jar;C:\Program
Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util-lookup_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util-lookup_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\lib\locale\org-openide-util_zh_CN.jar;C:\Program Files\Java\jdk1.7.0_05\lib\dt.jar;C:\Program Files\Java\jdk1.7.0_05\lib\tools.jar
Startup Classpath = C:\Program Files (x86)\NetBeans 7.2.1\platform\core\core.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\org-openide-filesystems.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\core_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\core_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\core_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\core_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\org-openide-filesystems_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\org-openide-filesystems_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\org-openide-filesystems_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\platform\core\locale\org-openide-filesystems_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\org-netbeans-upgrader.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\core_nb.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\core_nb_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\core_nb_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\core_nb_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\core_nb_zh_CN.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\org-netbeans-upgrader_ja.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\org-netbeans-upgrader_pt_BR.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\org-netbeans-upgrader_ru.jar;C:\Program Files (x86)\NetBeans 7.2.1\nb\core\locale\org-netbeans-upgrader_zh_CN.jar
文字数制限のため、一部削除しました。どうもありがとうございます！