Unexpected error occur after updating Powershell.

[kashyap2003]

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

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

PSReadLine: 2.2.0-beta1
PowerShell: 7.2.0
OS: Microsoft Windows 10.0.22000
BufferWidth: 120
BufferHeight: 30

Steps to reproduce

Don't Know.

Expected behavior

Actual behavior

[bulax]

Please update Psreadline to latest version 2.2.0-beta4

[cosmo0]

Please update Psreadline to latest version 2.2.0-beta4

In case like me you're wondering how, follow the installation steps here: https://github.com/PowerShell/PSReadLine

[DominikIlski]

When i try to run
Install-Module PSReadLine -RequiredVersion 2.2.0-beta4 -AllowPrerelease
i get

Install-Package: Administrator rights are required to install or update. Log on to the computer with an account that has Administrator
rights, and then try again, or install by adding "-Scope CurrentUser" to your command. You can also try running the
Windows PowerShell session with elevated rights (Run as Administrator).

even though i run powershell as an Admin.

[cosmo0]

Yeah I got the same, and I followed the directions in the error message: add -Scope CurrentUser to the Install-Module command. Then you have to restart Powershell.

[DominikIlski]

I have tried this flag before, but with no succes, but now it is working.
To solve this issue just run:
Install-Module PSReadLine -RequiredVersion 2.2.0-beta4 -AllowPrerelease -Scope CurrentUser
And restart Powershell

[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.