I am experiencing the same problem. It happens more often after 'Quick add term' than after 'add term', so now I mostly use 'add term'. Whenever I reopen Studio and get to the same segment, confirming the segment makes Studio crash again. I can only confirm it by using the context menu and change the segment status. It look likes it's caused by Multiterm (which often stops working any way). As soon as I deselect the termbases, the problems doesn't seem to occur (as often). Unfortunately, I use Multiterm very frequently, so this error is most inconvenient. 

Jerzy, what is RAT?

Frank Van T Veer 

RAT = rapid add term

Please follow the steps suggested above. Especially in your case: reorganize your termbases.

For both of you:

MultiTerm termbases can be opened in Microsoft Access, where you can use the "Repair database" command to repair them. Works quicker than in MultiTerm. However, I cannot tell, if this has the same effect as reorganizing in MT.

Perhaps Paul  can confirm and/or test if repairing database is quicker in Microsoft Access than in MultiTerm.

What if the cause is the server based termbase which is owned by the translation company? I need to ask them to reorganize their termbase?

Olav 

You can ask them to do so. TBH I never tried to add any terms to an sever database, so I have no experience here.

Olav 

You can ask them to do so. TBH I never tried to add any terms to an sever database, so I have no experience here.