I've had this problem in several versions and it usually occurs when opening COED for the first time in a session:-
- open COED (it opens to last word found - arbitrary in this case)
- type word (grammar in this case)

7103.Not Responding_COED.zip
The log may not be useful (look for COED) as the lookup may have been interrupted by taking the screen shot and it reverted to arbitrary. The delay (black box) can take several seconds. I'll provide an uninterrupted log next time it occurs.