Could not load type 'System.Management.Automation.Subsystem.PredictionResult'

[Uffman]

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues, especially the pinned issues.

Exception report

### Exception

System.TypeLoadException: Could not load type 'System.Management.Automation.Subsystem.PredictionResult' from assembly 'Microsoft.PowerShell.PSReadLine.Polyfiller, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
   at Microsoft.PowerShell.PSConsoleReadLine.PredictionViewBase.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.PredictionInlineView.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.Prediction.Reset()
   at Microsoft.PowerShell.PSConsoleReadLine.Initialize(Runspace runspace, EngineIntrinsics engineIntrinsics)
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken)

Screenshot

Environment data

### Environment
PSReadLine: 2.2.0-beta1
PowerShell: 7.2.0
OS: Microsoft Windows 10.0.22000
BufferWidth: 231
BufferHeight: 26

Last 0 Keys

Steps to reproduce

Error happens as soon as I open powershell 7.2.0PowerShell

Expected behavior

Open powershell 7.2.0PowerShell

Actual behavior

Powershell chrashes

[Uffman]

This helped me:
https://www.hanselman.com/blog/powershell-720-could-not-load-type-systemmanagementautomationsubsystempredictionresult

[iSazonov]

Please update latest Beta4 version.

[Uffman]

it worked

[daxian-dbw]

This issue was fixed in 2.2.0-beta3 version of PSReadLine. You can fix this by upgrading to the latest 2.2.0-beta4 version of PSReadLine. Instructions for doing so:

1. stop all instances of pwsh.
2. from cmd.exe run: pwsh -noprofile -command "Install-Module PSReadLine -AllowPrerelease -Force"

---

If you want to remove that beta version of PSReadLine and use the 2.1.0 version of PSReadLine that's shipped with PowerShell 7.2, you can:

1. run pwsh -noprofile -noninteractive to start pwsh without loading PSReadLine
2. run Uninstall-Module -Name PSReadLine -RequiredVersion <2.2.0-beta1 or 2.2.0-beta2> -AllowPrerelease to remove the module. Or, you can manually remove that module folder.