Ever since updating to Trados 2022 I have had this problem occasionally (not on every segment).
The error message if I press on "Confirm" instead of using the desktop shortcut is "Object reference not set to an instance of an object"
I have finally managed to get it working, but only by deactivating all of the verifiers (project settings/verification - QA checker, Tag verification, Terminology verification.
This appears to be a bug in the program!
Has anyone else had this problem?
