Error message with file-based TM

Question

Hi there! 
 I'm using Studio 2021 Freelance. 
 I searched and only found issues related to cloud-based MT translation, but it's not my case. 
 I'm working on a project (and different projects for the last couple of weeks after I got the 2021 version) and I keep getting an error message that becomes quite annoying: 
 "There was a problem while translating. See the Messages Window for more information." 
 Then, in the message window: "An error occurred while using translation provider [name of file-based TM]. Value cannot be null. Parameter name: input." (it happens in different projects and different file-based TMs, but in every single project so far). 
 
 Any thoughts?

Paul Filkin · Answer

Lilian Brogna 
 If it's every project it sounds like it might be a problem with your template. Try renaming this folder and restart Studio: 
 c:\Users\[USERNAME]\Documents\Studio 2021\Project Templates\ 
 If that doesn't help try a reset. Rename this folder (just add _old to the end or something, it's not important what you rename it to) and restart Studio: 
 c:\Users\[USERNAME]\AppData\Roaming\SDL\SDL Trados Studio\Studio16 
 So the path would become this: 
 c:\Users\[USERNAME]\AppData\Roaming\SDL\SDL Trados Studio\Studio16_old 
 If you can't find this folder then you need to unhide your hidden files/folders: 
 https://www.howtogeek.com/howto/windows-vista/show-hidden-files-and-folders-in-windows-vista/

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Error message with file-based TM