Same problem here.

In English, the error message says:

Could not load file or assembly 'SimpleInjector, Version=4.9.0.0, Culture=neutral, PublicKeyToken=984cb50dea722e99' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Things I’ve tried so far without success:

- rebooting PC

- uninstalling/reinstalling Trados

- resetting license

- renaming folders of previous Trados versions at C:\Users\[USER]\AppData\Roaming\SDL\SDL Trados Studio

Hi Carla Lopes

Maybe the below article would help 

https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0037729

Best regards, 

Loredana 

Thank you very much, worked for me.

Carla Lopes Andrus Lauringson

It's worth noting that clicking on this link would have taken you to the KB article you need:

It's faster than asking for help :-)

Problem solved, thank you!!!

I couldn't find anything on this. Maybe I've searched for the wrong key words. Thank you!

For all having this problem:
Uninstall the WorldServer Components via Control Panel in Windows. Start Studio, go to Help and "Check for updates". Install the CU8, released today. This solves the problem.

Thanks, will keep that in mind.

Installing the WorldServer Compatibility Pack solved the Trados not starting after latest update problem,

but now I can’t open .wsxz files:

Unexpected argument: /openWSPackage

USAGE: SDLTradosStudio.exe [/help|/?] /arg1 val1 /arg2 val2

Task: NoAutoUpdate
Description: Starts the application without automatically checking for updates.
Usage: SDLTradosStudio.exe /noautoupdate
Arguments:
/noautoupdate Starts the application without automatically checking for updates.

Task: Open Language Cloud Task
Description: Opens a Language Cloud Task in Studio
Usage: SDLTradosStudio.exe /openLCTask <sdlproject.lctask.languagecloud.sdl.com/
Arguments:
/openLCTask The URI of the Language Cloud Task to open

Task: Open Alignment
Description: Opens an alignment in the Alignment View.
Usage: SDLTradosStudio.exe /openAlignment <alignment>
Arguments:
/openAlignment The full file path to the alignment you want to open.

Task: Open Retrofit
Description: Opens a retrofit file in the Alignment View.
Usage: SDLTradosStudio.exe /openRetrofit <retrofit>
Arguments:
/openRetrofit The full file path to the retrofit file you want to open.

Task: Create Project
Description: Starts the Create Project wizard.
Usage: SDLTradosStudio.exe /createProject [/files <file1> [<file2> <folder1> ...]] [/name <name>] [/template <template>] [/referenceProject <referenceProject>]
Arguments:
/createProject Starts the Create Project wizard.
/files The full file path of one or more documents or folders to add to the Create Project wizard.
/name The name of the Project
/template An existing template name or file path to use.
/referenceProject An existing reference project file path to use.

Task: Open Document
Description: Opens a document or a number of documents in the Editor View.
Usage: SDLTradosStudio.exe /openDocument <document1> [<document2> ...]
Arguments:
/openDocument The full file path of one or more documents to open.

Task: Open File Based TM
Description: Opens a file based TM or a number of file based TMs in the TM View.
Usage: SDLTradosStudio.exe /openFileTm <file tm1> [<file tm2> ...]
Arguments:
/openFileTm The full file path of one or more TMs to open.

Task: Open Package
Description: Opens a package in the Package View.
Usage: SDLTradosStudio.exe /openPackage <package>
Arguments:
/openPackage The full file path of the package to open.

Task: Open Project
Description: Opens a project in the Projects View.
Usage: SDLTradosStudio.exe /openProject <project>
Arguments:
/openProject The full file path of a Project to open.

Task: Open Server Project
Description: Opens a server project in the Projects View.
Usage: SDLTradosStudio.exe /openServerProject <project URI>
Arguments:
/openServerProject The URI of a Server Project to open.