As above. CT locks up completely (I have to kill the process) when I select 'Double words check' from the QA menu.
It's a largish project with multiple Word files (about 13).
I'm running CT 2017051701 on Ubuntu 16.04.
If it is a large project, you may need to wait until the process completes. Otherwise, please submit a support ticket and attach the .ctp file created via Project > Export and exchange > To Package... .