Specified cast is not valid - Error message in Trados 2021 SR! 16.1.3.4096 - Memories View

Question

I have recently updated the software and some of the memories required being updated. In the Memories View, once I select a memory to have it updated, the error "Specified cast is not valid" appears and then, the software just crashes. 
 I have already read previous posts and tried the four suggested workarounds with no success. So, following the intructions, I require to log a case. 
 Can anybody help, please?

Paul · Answer

Grissel Sánchez 
 It's more helpful if you actually tell us what you have tried. Have you tried a full reset which is what the support team will probably do first? 
 You could use this app for the reset and this will also explain what you will lose by carrying out a reset before you do it: 
 appstore.sdl.com/.../ 
 But if you'd rather do this manually then 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: 
 www.howtogeek.com/.../

Lydia Simplicio · Answer

Hello Grissel Sánchez , 
 You mention that you believe the TM is corrupted, you can try to use the SDLTM Repair app - 
 https://appstore.sdl.com/language/app/sdltm-repair/298/ 
 Another option might be to export the TM to TMX and then import the TMX into a NEW TM.

Lydia Simplicio · Answer

Hello Grissel Sánchez , 
 Unfortunately, this sounds as though the issue is with the specific TM that is corrupted and cannot be repaired. 
 Although SDL TMs are robust, sometimes they can corrupt and cannot be repaired. 
 We suggest that you backup your resources on a regular basis and to help you do that, there is even a free app available 
 https://appstore.sdl.com/language/app/sdl-tmbackup/869/

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Specified cast is not valid - Error message in Trados 2021 SR! 16.1.3.4096 - Memories View