title: just got android studio´s latest update and it really broke my installation. What to do?
body: <p>just go android studio´s latest update and it really broke my installation.</p>
  
  <p>Patch to : Android studio 2.2.2.0 145.3360264</p>
  
  <pre><code> 10:40:38 ClassFormatError: Illegal UTF8 string in constant pool in
   class file
   com/intellij/execution/junit2/configuration/JUnitConfigurable 10:40:41
   PicoPluginExtensionInitializationException: Unknown constant tag 250
   in class file
   org/intellij/plugins/intelliLang/inject/config/ui/XmlAttributePanel
   10:40:42 ClassFormatError: Illegal UTF8 string in constant pool in
   class file
   com/intellij/execution/junit2/configuration/JUnitConfigurable 10:40:44
   ClassFormatError: Illegal UTF8 string in constant pool in class file
   com/intellij/execution/junit2/configuration/JUnitConfigurable 10:40:45
   Plugin Error
            Problems found loading plugins:
            Plugin "Google Analytics Uploader" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Android Games" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "SDK Updater" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "NDK WorkspaceManager Support" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Google Developers Samples" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Test Recorder" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Google Services" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Google Cloud Tools For Android Studio" was not loaded: required plugin "org.jetbrains.android" not installed.
            Plugin "Firebase Testing" was not loaded: required plugin "org.jetbrains.android" not installed.
            Disa... (show balloon) 10:41:11 Error Loading Project: Cannot load 3 facets Details... 10:41:12 Plugins Suggestion
            Features covered by IntelliJ IDEA Ultimate Edition (Android Support) are detected.
            Check IntelliJ IDEA Ultimate Edition
            Do not suggest Ultimate Edition 10:46:56 Compilation completed successfully with 10 warnings in 13s 654ms 10:47:52
   ClassFormatError: Illegal UTF8 string in constant pool in class file
   com/intellij/execution/junit2/configuration/JUnitConfigurable 10:48:59
   ClassFormatError: Illegal UTF8 string in constant pool in class file
   com/intellij/execution/junit2/configuration/JUnitConfigurable
  </code></pre>
  
  <p>UPDATE:
  When i go to File>Setttings I get this message and settings is not opening</p>
  
  <blockquote>
    <p>11:16:14 ClassFormatError:
    org/jetbrains/plugins/groovy/debugger/GroovyHotSwapConfigurableUi</p>
  </blockquote>