Hi!
The .sdltm file is stored on a memory stick.
After opening the laptop from sleep regime and trying to continue working by saving segment i.e. updating a TM, the software crashed and after a new execution of Trados, Trados told that the TM is corrupt.
How to recover the TM?
You can try the free plugin SDLTM Repair: https://appstore.rws.com/plugin/41
Trados still considers "repaired.sdltm" (created with the free plugin SDLTM Repair) as corrupt. In fact, the error for repaired TM is "The requested data file could not be located.".
Please reject my answer, so any colleague will see your issue as pending. I'd recommend you to add anything you've already tried.
If there is a backup of the TM, you can simply remove the corrupted TM from your current project, add the old TM to your project, then Update Main Translation Memories to add the translated segments to the TM.
I seem to have a backup .bak from this February but I have been using the corrupted one for many projects and the comparison of the size of corrupted and backup one is about 50% in KB. This indicates that I am able to restore half of the corrupted TM?
This indicates that I am able to restore half of the corrupted TM?
I don't really know, but you can always update that TM with the projects from February and March.
This use case highlights the importance of regular backups. We do daily backups, we use the backups just a couple of times every year, but they definitely pay-off.
I might indeed update that TM with the projects from February and March but it would be a manual i.e. hard lesson highlighting the importance of regular backups.
It could've been worst and you could have lost everything on your PC.
Anyway, please have a look at this link and try deleting the TranslationMemoryRepository.xml file. If it works, it'd be the fastest way: https://gateway.rws.com/csm?id=kb_article_view&sys_kb_id=028d2aa01b0f9a50772c0dcad34bcb7a
Yeah, updating your TM can be manual, but it can be fast following this procedure with the SDLXLIFF files from February and March: https://docs.rws.com/en-US/trados-studio-2022-980998/importing-tm-data-364397
Last, there is a way to recover your corrupted TM (maybe only partially). Honestly, I've never tried, but some colleagues have successfully repaired TMs that the plugin mentioned above did not: TM repair
If nothing works, please reject my answer.
Hello Olav ,
The .sdltm file is stored on a memory stick.
I am no Studio expert, but, if I were you, I would start by moving my corrupted/repaired TM to some internal hard disk/SSD of your computer and see what happens.
Good luck.
Gérard
Hello Gérard LAMBERT ,
Firstly I was not able to move my corrupted TM to internal hard disk but after some restarts of PC I was able to do so.
SDL showed me this error when I tried to add the repaired TM (repaired with the SDLTM Repair tool) to the project: 
.
After using a small utility of TM Fusion for Trados (Preview) built to attempt to recover a corrupt Translation Memory, I was able to open the TM again in Trados project. Although TM Fusion for Trados (Preview) showed some sort of error at the first launch and closed unexpectedly after the repair process and did not add the .exe to the Start menu after install.
SDL showed me this error when I tried to add the repaired TM (repaired with the SDLTM Repair tool) to the project: .
After using a small utility of TM Fusion for Trados (Preview) built to attempt to recover a corrupt Translation Memory, I was able to open the TM again in Trados project. Although TM Fusion for Trados (Preview) showed some sort of error at the first launch and closed unexpectedly after the repair process and did not add the .exe to the Start menu after install.
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