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您好我正在學習和開始使用ExtJS（from here）。但似乎我錯過了某些東西，或者在這裏遇到了一些問題。每當我試圖執行第一個基本簡單的命令：sencha generate app -ext Myapp ./app它的失敗，以下情況除外：Sencha Cmd不生成ExtJS應用程序
Sencha Cmd v5.0.0.160
[ERR] java.lang.NullPointerException
at javax.xml.bind.DatatypeConverter.printBase64Binary(DatatypeConverter.java:547)
at com.sencha.util.StringUtil.toBase64(StringUtil.java:202)
at com.sencha.tools.generator.DataStoreImpl.get(DataStoreImpl.java:103)
at com.sencha.tools.generator.Generator$1.doMerge(Generator.java:464)
at com.sencha.tools.generator.Generator$Mode$3.dispatch(Generator.java:269)
at com.sencha.tools.generator.Generator.generateFileToFile(Generator.java:449)
at com.sencha.tools.generator.Generator.generateFileToDir(Generator.java:441)
at com.sencha.tools.generator.Generator.generateDirToDir(Generator.java:434)
at com.sencha.tools.generator.Generator.generateDirToDir(Generator.java:429)
at com.sencha.tools.generator.Generator.generate(Generator.java:148)
at com.sencha.tools.pkg.LocalRepository.init(LocalRepository.java:130)
at com.sencha.tools.pkg.LocalRepository.init(LocalRepository.java:184)
at com.sencha.command.environment.WorkspaceRepository.getLocalRepository(WorkspaceRepository.java:274)
at com.sencha.command.environment.FrameworkEnvironment.loadFrameworkPackage(FrameworkEnvironment.java:180)
at com.sencha.command.generator.GeneratorCommands$WorkspaceCommand.getParameters(GeneratorCommands.java:146)
at com.sencha.command.BasePluginCommands$BasePluginCommand.doExecute(BasePluginCommands.java:26)
at com.sencha.command.generator.GeneratorCommands$WorkspaceCommand.execute(GeneratorCommands.java:116)
at com.sencha.command.generator.GeneratorCommands$AppCommand.generateWorkspace(GeneratorCommands.java:468)
at com.sencha.command.generator.GeneratorCommands$AppCommand.execute(GeneratorCommands.java:313)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sencha.util.MethodInvoker$Arguments.invoke(MethodInvoker.java:175)
at com.sencha.cli.Command.dispatch(Command.java:43)
at com.sencha.cli.Commands.dispatch(Commands.java:64)
at com.sencha.cli.Commands.dispatch(Commands.java:64)
at com.sencha.command.Sencha.dispatch(Sencha.java:71)
at com.sencha.command.Sencha.main(Sencha.java:139)
當我試圖執行sencha generate app MyApp ./app是拋出異常如下：
Sencha Cmd v5.0.0.160
[ERR] Unable to locate 'framework.dir' property from sencha.cfg and no framework directory specified
[ERR] Please ensure this command was executed from a valid framework directory
[ERR] No Framework specified
什麼是framework.dir這裏？ 我已經下載了Sencha ExtJS v5.0.0以及，我是否需要將它保存在某個地方？
更新
運行sencha -sdk /path/to/extjs-5.0.0 generate app MyApp ./app給予同樣的結果，說回購後沒有正確初始化。
我已經安裝了Ruby v1.9.3和Sencha Cmd v5.0.0.160，您可以在上面的例外中看到。任何想法如何解決這個問題？
感謝您的答覆，我這樣做，但沒有幫助 – agpt
東西很奇怪，我沒有別的選擇，不是硬復位/格式我的臺式機！ ！ :(**後，一切工作順利.. !! **如果任何人知道確切的根本原因，請分享它 – agpt