I tried a restart, but still, same problem. Could I delete the Microsoft User Data stuff in ~/Documents and then see if that fixes it?ero87 said:funny i had the same issue the other day - a quick restart of the program fixed it.
But it could also be that your custom dictionary (i.e. words you add) is full. I'm not sure how to fix that though..
Here's what I found: The Custom Dictionary needs to be checked as English(US) for the add option to work. I'm not sure why but I think it is because the native mac dictionary is US English by default. In the UK it is a constant problem among mac users. I had my custom dictionary set as English (UK) all the time and couldn't figure out why I can't add a simple word like colour to it. So I changed the cust dict language to English (US) and the add option came on. Alternatively you can set the custom dictionary language to (none) and it will work just the same.