By mistake installed the Latest version v2018.3.0

[dennis (dennis ulahannan)]

Hi, I by mistake downloaded the v2018.3.0 and installed and cannnot open my old xaml files. Please advice what to do ?

[indra]

@dennis what error you are facing

[Haich (Harish Kumar)]

I installed the latest version yesterday too, and all of my XAML file are receiving errors too. Like this:

Could not find type ‘UiPath.Activities.WriteWorkbookCell’ in assembly ‘UiPath.Activities’. Row: 261, Column: 42

Could not find type ‘UiPath.Library.Region’ in assembly ‘UiPath.Library’. Row: 241, Column: 44

[indra]

@Haich Try this in your project folder delete json file and run

[Haich (Harish Kumar)]

@indra I have deleted json file but I am still getting the same errors

[indra]

@Haich Update all the local packages in package manager

[Haich (Harish Kumar)]

@indra All packages are up-to-date in local package manager

[loginerror (Maciej Kuźmicz)]

Please see this Troubleshooting guide:

V2018.3 UiPath Community Edition - Troubleshooting Guide

Troubleshooting Guide (UiPath CE 2018.3) “When trying to run the project, I receive the following error: System.AggregateException: One or more errors occurred.” Solution The problem is that UiPath.Service.Host process (the robot) was not restarted at all after the upgrade. This can be done by killing the process in task scheduler, restarting the robot tray or logging out/logging in to your windows account. “I cannot find the machine key in the Add Robot to connect my Robot to Orchestra…

Reinstalling your custom packages might help here.
If it does not, please inform @Gabriel_Tatu. Providing a sample xaml file from before and after conversion would also help to troubleshoot the issue.