升级Android Studio 4.1 RC后启动失败，报Internal error错误求助

Hey there, sorry to hear you're stuck with this annoying startup crash in Android Studio 4.1 RC. Let's break down the error and work through solutions that've helped others with the same issue:

First, let's recap the error you're seeing for clarity:

java.lang.NoSuchMethodError: com.intellij.ide.plugins.PluginManagerCore.loadDescriptors()[Lcom/intellij/ide/plugins/IdeaPluginDescriptorImpl; 
at com.a.a.b.b.ar.a(ar.java:121) 
at com.a.a.b.b.ar.a(ar.java:71) 
at com.intellij.idea.MainImpl.start(MainImpl.java:19) 
at com.intellij.idea.StartupUtil.startApp(StartupUtil.java:303) 
at com.intellij.idea.StartupUtil.prepareApp(StartupUtil.java:245) 
at com.intellij.ide.plugins.MainRunner.lambda$start$0(MainRunner.java:47) 
at java.lang.Thread.run(Thread.java:748)
----- 
JRE 1.8.0_242-release-1644-b01 amd64 by JetBrains s.r.o 
C:\{AndroidStudioPATH}\jre\jre

This error almost always ties to incompatible plugins or corrupted cache files. Here are the steps to fix it:

• Clean Android Studio Cache & Plugin Directories
  Since you can't even launch AS, you'll need to do this manually:

  1. Close any running instances of Android Studio.
  2. Navigate to your user-specific AS config folder: C:\Users\<YourUsername>\.AndroidStudio4.1\
  3. Delete the caches and plugins folders entirely.
  4. Restart Android Studio. It'll rebuild the cache and re-initialize default plugins. If it starts successfully, you can then reinstall your third-party plugins one by one to find the culprit (if any).

• Verify Corrupted JRE Installation
  The error mentions using JetBrains' bundled JRE. If the JRE files are corrupted, this can cause method lookup failures:

  1. Close AS, then navigate to the installation path mentioned: C:\{AndroidStudioPATH}\jre\jre
  2. Check if the folder has all necessary files (no missing/corrupted entries). If you suspect corruption, download the full Android Studio 4.1 RC installer and perform a clean overwrite of your existing installation (don't just do an incremental update).

• Disable Incompatible Third-Party Plugins (Alternative Method)
  If deleting the plugins folder works, but you need to identify which plugin was causing the issue:

  1. After AS starts successfully, go to File > Settings > Plugins
  2. Enable one plugin at a time, restart AS after each enablement.
  3. When AS crashes again, that's the incompatible plugin. Either check for an update for that plugin, or disable it until an update is available.

• Full Clean Reinstall (Last Resort)
  If none of the above works, do a complete wipe and reinstall:

  1. Uninstall Android Studio via Windows Settings.
  2. Delete all related folders:
     • C:\{AndroidStudioPATH}\ (installation directory)
     • C:\Users\<YourUsername>\.AndroidStudio4.1\
     • C:\Users\<YourUsername>\.gradle\
     • C:\Users\<YourUsername>\.android\
  3. Download the latest Android Studio 4.1 RC installer and install it fresh.

内容的提问来源于stack exchange，提问作者Karthik Kompelli