Works very good for me but I have an issue that i'm not not sure why it's happening..
When i open up the dialogue (right click in a channel) i then choose incoming, then i pick english and close the box.. it will translate perfectly.. my only issue is when i have it translating incoming messages my hightlights no longer seem to work.

Then when i turn the translation off my highlights are working just fine? What's causing this? Any info could help! I do love the script though! :)